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1.
Deich, L. I.
Absorption of light by glasses in the far infrared / L. I. Deich> // Jetp Lett. - 1992. -
Vol. 56
,
Is. 10
. - P. 492-495. - Cited References: 9 . - ISSN 0021-3640
РУБ
Physics, Multidisciplinary
Рубрики:
STATES
Аннотация:
An explanation is proposed for the deviation from the Debye shape of the absorption curve of glasses in the far infrared.
WOS
Доп.точки доступа:
Дейч, Лев Исаакович
}
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2.
Deich, L. I.
Far-infrared attenuation in glasses / L. I. Deich> // Phys. Rev. B. - 1994. -
Vol. 49
,
Is. 1
. - P. 109-113,
DOI
10.1103/PhysRevB.49.109. - Cited References: 29 . - ISSN 0163-1829
РУБ
Physics, Condensed Matter
Рубрики:
VITREOUS SILICA
TEMPERATURE
MODEL
LOCALIZATION
ABSORPTION
SOLIDS
STATES
Аннотация:
The influence of quasilocal vibrations on the far-infrared spectra of glasses is investigated under the supposition that the quasilocal vibrations are directly inactive in the attenuation. It is shown that taking into account phonon-quasilocal-vibration coupling and both medium- and short-range structure of the inhomogeneities of a photon-phonon coupling parameter can give rise to an attenuation curve similar to one observed for a-SiO2 and related materials.
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Держатели документа:
L. V. Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Дейч, Лев Исаакович
}
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3.
Majorana zero modes
in the coexistence phase of chiral superconductivity and 120°-type magnetic order on the triangular lattice / V. V. Val'kov [et al.]> //
J. Magn. Magn. Mater. - 2017. -
Vol. 440
. - P. 37-40,
DOI
10.1016/j.jmmm.2016.12.093. - Cited References: 15. - This study was funded by RFBR according to the research projects Nos. 16-02-00073-a, 16-42-243069-r-mol-a (partly with Government of Krasnoyarsk Territory). A.O.Z. is grateful for support of the Grant of the President of the Russian Federation SP-1370.2015.5. . - ISSN 0304-8853
Перевод заглавия:
Майорановские нулевые моды в фазе сосуществования сверхпроводимости и 120-градусного магнитного порядка на треугольной решетке
РУБ
Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
HUBBARD FERMIONS
BREAKING
ENSEMBLE
STATES
Кл.слова (ненормированные):
Majorana zero modes
--
Chiral superconductivity
--
Noncollinear magnetic order
--
Triangular lattice
Аннотация:
We discuss the conditions under which Majorana zero modes can be implemented in the coexistence phase of chiral superconductivity and 120°-type noncollinear spin structure on the triangular lattice. It is shown that the gapless elementary excitations exist on the finite region in the parameter space consisting of the effective exchange field, the chemical potential, and the superconducting order parameter. The range of parameters supporting Majorana edge
states
with exactly zero excitation energy has also been found.
Обсуждаются условия, при которых в фазе сосуществования киральной сверхпроводимости и неколлинеарной 120-градусной спиновой структуры на треугольной решетке могут реализоваться майорановские нулевые моды. Показано, что бесщелевые элементарные возбуждения существуют в конечной области параметрического пространства, определяемого эффективным обменным полем, химическим потенциалом и сверхпроводящим параметром порядка. Набор параметров, формирующий майорановские краевые состояния со строго равной нулю энергией возбуждения, также был найден.
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Доп.точки доступа:
Val'kov, V. V.; Вальков, Валерий Владимирович; Zlotnikov, A. O.; Злотников, Антон Олегович; Fedoseev, A. D.; Федосеев, Александр Дмитриевич; Shustin, M. S.; Шустин, Максим Сергеевич; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН
}
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4.
Avramov, P. V.
Non-diagram transitions in polarized X-ray absorption CuL(3) spectra of HTSC-ceramics / P. V. Avramov, S. G. Ovchinnikov> // Fiz. Tverd. Tela. - 1996. -
Vol. 38
,
Is. 11
. - P. 3226-3240. - Cited References: 28 . - ISSN 0367-3294
РУБ
Physics, Condensed Matter
Рубрики:
HIGH-TC SUPERCONDUCTIVITY
LA2CUO4
ALPHA
SATELLITES
STATES
OXIDES
XANES
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Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Аврамов, Павел Вениаминович
}
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5.
Deich, L. I.
Low-frequency raman-scattering in glasses / L. I. Deich> // Phys. Rev. B. - 1995. -
Vol. 51
,
Is. 13
. - P. 8131-8139,
DOI
10.1103/PhysRevB.51.8131. - Cited References: 32 . - ISSN 0163-1829
РУБ
Physics, Condensed Matter
Рубрики:
AMORPHOUS SOLIDS
VITREOUS SILICA
THERMAL-CONDUCTIVITY
LIGHT-SCATTERING
TEMPERATURE
STATES
MODES
HEAT
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,
Scopus
Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Дейч, Лев Исаакович
}
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6.
Gavrichkov, V. A.
Low-energy electron spectrum in copper oxides in the multiband p-d model / V. A. Gavrichkov, S. G. Ovchinnikov> // Phys. Solid State. - 1998. -
Vol. 40
,
Is. 2
. - P. 163-168,
DOI
10.1134/1.1130262. - Cited References: 31 . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
HIGH-TC SUPERCONDUCTORS
SR2CUO2CL2
STATES
PLANES
Аннотация:
An exact diagonalization of the Hamiltonian in the p-d model of a CuO6 cluster was used to obtain dependences on the model parameters of the lowest-energy two-hole terms: the energy difference between the 2p orbitals of planar and apical oxygen Delta(apex) = epsilon(2p) - epsilon[2p(apex)], the crystal field parameter Delta(d) = epsilon(3z2-r2)-epsilon(x2-y2), and the ratio of the distances between the copper atom and the apical and planar oxygen atoms d(apex)/d(pl). In the limit of large d(apex)/d(pl) and Delta(d), OUT model is equivalent to the three-band p-d model and, in this case, large singlet-triplet splitting Delta epsilon greater than or equal to 1 eV is also observed. As the parameters decrease, a singlet-triplet crossover is observed. Two mechanisms are identified for stabilization of the tripler term B-3(1g)(0) as the ground state. It is shown that for realistic values of the parameters, reduction of the p-d model to the three-band model is limited by the low energies of the current excitations because of the presence of the lower excited B-3(1g), and (1)A(1g) cluster
states
. Intercluster hopping causes strong mixing of singlet and triplet
states
far from the Gamma point. The results of the calculations are compared with data obtained by angle-resolved photoelectron emission in Sr2CuO2Cl2. (C) 1998 American Institute of Physics.
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Держатели документа:
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Гавричков, Владимир Александрович
}
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7.
Strength of topologically
induced magnetic moments in a quantum device / P. . Exner [et al.]> // Phys. Rev. Lett. - 1998. -
Vol. 80
,
Is. 8
. - P. 1710-1713,
DOI
10.1103/PhysRevLett.80.1710. - Cited References: 13 . - ISSN 0031-9007
РУБ
Physics, Multidisciplinary
Рубрики:
WAVE-GUIDES
STATES
FLOW
Аннотация:
We consider resonant vortices around nodal points of the wave function describing electron transport through a mesoscopic der-ice. With a suitable choice of the device geometry. the dominating role is played of single vortices with a preferred orientation. To characterize the strength of the resulting magnetic moment, we have introduced a "magnetance," the quantity defined in analogy with the device conductance. Its basic properties and possible experimental detection are discussed. [S0031-9007(97)05255-1].
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Держатели документа:
Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic
Czech Tech Univ, Doppler Inst, Prague 11519, Czech Republic
Acad Sci Czech Republ, Inst Phys, CR-16200 Prague, Czech Republic
Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Доп.точки доступа:
Exner, P.; Seba, P.; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Streda, P.; Feher, P.
}
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8.
Malakhovskii, A. V.
Temperature dependence of the fine structure of the C and E absorption bands in RbMnF3 below the Neel temperature / A. V. Malakhovskii, T. P. Morozova> // Phys. Solid State. - 2006. -
Vol. 48
,
Is. 2
. - P. 283-290,
DOI
10.1134/S1063783406020156. - Cited References: 24 . - ISSN 1063-7834
РУБ
Physics, Condensed Matter
Рубрики:
PEROVSKITE FLUORIDES
VIBRONIC SPECTRA
CRYSTALS
MNF2
INTENSITY
DICHROISM
STATES
Аннотация:
The variation in the parameters (width, position, intensity) of the fine structure lines in the C[(6)A(1g) - (4)A(1g), E-4(g)((4)G)] and E[(6)A(1g) - E-4(g)(D-4)] bands in RbMnF3 with temperature is studied in the temperature range 10-70 K. In the C band, two narrow ( 6 cm(-1)) lines are are distinguished at distances of 77 and 80 cm(-1) from the exciton line at T
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Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Morozova, T. P.; Малаховский, Александр Валентинович
}
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9.
Bulgakov, E. N.
Spectroscopic properties of large open quantum-chaotic cavities with and without separated time scales / E. N. Bulgakov, I. . Rotter> // Phys. Rev. E. - 2006. -
Vol. 73
,
Is. 6
. - Ст. 66222,
DOI
10.1103/PhysRevE.73.066222. - Cited References: 24 . - ISSN 1539-3755
РУБ
Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
HELMHOLTZ EQUATION
SYSTEMS
DYNAMICS
STATES
TRANSMISSION
BILLIARDS
Кл.слова (ненормированные):
Hamiltonians
--
Numerical analysis
--
Phase control
--
Quantum theory
--
Spectroscopic analysis
--
Wave transmission
--
Bunimovich cavity
--
Hamiltonian formalism
--
Phase rigidity
--
Quantum-chaotic cavities
--
Cavity resonators
Аннотация:
The spectroscopic properties of an open large Bunimovich cavity are studied numerically in the framework of the effective Hamiltonian formalism. The cavity is opened by attaching two leads to it in four different ways. In some cases, the transmission takes place via standing waves with an intensity that closely follows the profile of the resonances. In other cases, short-lived and long-lived resonance
states
coexist. The short-lived
states
cause traveling waves in the transmission while the long-lived ones generate superposed fluctuations. The traveling waves oscillate as a function of energy. They are not localized in the interior of the large chaotic cavity. In all considered cases, the phase rigidity fluctuates with energy. It is mostly near to its maximum value and agrees well with the theoretical value for the two-channel case.
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Держатели документа:
Kirensky Inst Phys, Krasnoyarsk 660036, Russia
Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
ИФ СО РАН
Kirensky Institute of Physics, 660036, Krasnoyarsk, Russian Federation
Max Planck Institute for the Physics of Complex Systems, D-01187 Dresden, Germany
Доп.точки доступа:
Rotter, I.; Булгаков, Евгений Николаевич
}
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10.
Decisive proofs of
the s± → s++ transition in the temperature dependence of the magnetic penetration depth / V. A. Shestakov, M. M. Korshunov, Y. N. Togushova, O. V. Dolgov> // Supercond. Sci. Technol. - 2021. -
Vol. 34
,
Is. 7
. - Ст. 075008,
DOI
10.1088/1361-6668/abff6f. - Cited References: 40. - We are grateful to D V Efremov, A S Fedorov, S G Ovchinnikov, E I Shneyder, D Torsello, and A N Yaresko for useful discussions. This work was supported in part by the Russian Foundation for Basic Research (RFBR) Grant No. 19-32-90109 and by RFBR and Government of Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science to the Research Projects 'Electronic correlation effects and multiorbital physics in iron-based materials and cuprates' Grant No. 19-42-240007. . - ISSN 0953-2048. - ISSN 1361-6668
РУБ
Physics, Applied + Physics, Condensed Matter
Рубрики:
ORDER-PARAMETER
IMPURITIES
SUPERCONDUCTORS
STATES
MODEL
Кл.слова (ненормированные):
unconventional superconductors
--
iron pnictides
--
iron chalcogenides
--
impurity scattering
--
penetration depth
Аннотация:
One of the features of the unconventional s± state in iron-based superconductors is possibility to transform to the s++ state with the increase of the nonmagnetic disorder. Detection of such a transition would prove the existence of the s± state. Here we study the temperature dependence of the London magnetic penetration depth within the two-band model for the s± and s++ superconductors. By solving Eliashberg equations accounting for the spin-fluctuation mediated pairing and nonmagnetic impurities in the T-matrix approximation, we have derived a set of specific signatures of the s± → s++ transition: (1) sharp change in the behavior of the penetration depth λL as a function of the impurity scattering rate at low temperatures; (2) before the transition, the slope of ΔλL(T) = λL(T) - λL(0) increases as a function of temperature, and after the transition this value decreases; (3) the sharp jump in the inverse square of the penetration depth as a function of the impurity scattering rate, λL-2(Γa), at the transition; (4) change from the single-gap behavior in the vicinity of the transition to the two-gap behavior upon increase of the impurity scattering rate in the superfluid density ρs(T).
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Держатели документа:
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
RAS, PN Lebedev Phys Inst, Moscow 119991, Russia.
Donostia Int Phys Ctr, San Sebastian 20018, Spain.
Доп.точки доступа:
Shestakov, V. A.; Шестаков, Вадим Андреевич; Korshunov, M. M.; Коршунов, Максим Михайлович; Togushova, Yu. N.; Тогушова Ю. Н.; Dolgov, O., V; Russian Foundation for Basic Research (RFBR)Russian Foundation for Basic Research (RFBR) [19-32-90109]; RFBRRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science to the Research Projects 'Electronic correlation effects and multiorbital physics in iron-based materials and cuprates' [19-42-240007]
}
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11.
Chirkin, A. S.
General formula for the natural width of optical parametric oscillator spectral lines / A. S. Chirkin> // Laser Phys. Lett. - 2020. -
Vol. 17
,
Is. 11
. - Ст. 115401,
DOI
10.1088/1612-202X/abb6e6. - Cited References: 21 . - ISSN 1612-2011. - ISSN 1612-202X
РУБ
Optics + Physics, Applied
Рубрики:
QUANTUM-FLUCTUATIONS
PHASE MEASUREMENTS
STATES
NOISE
Кл.слова (ненормированные):
optical parametric oscillator
--
phase fluctuation
--
frequency deviation operator
--
natural spectrum width
Аннотация:
A new approach to the quantum analysis of the spectral linewidths of optical parametric oscillators (OPOs) is proposed. The approach is based on introducing a Hermitian frequency deviation operator. The spectral linewidths in the triply resonant OPO above-threshold regime have been calculated. It has been found that the width of the generated spectral line depends on the loss at all interacting frequencies, the photon number of frequency under study, and the threshold photon number of pump. The formula obtained for the spectral width is general; in particular cases, it yields the well-known results. The developed simple approach can be applied to the quantum analysis of the spectra of various oscillatory systems, for example, the multifrequency parametric and non-linear optomechanical interactions and lasers.
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Держатели документа:
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia.
Moscow MV Lomonosov State Univ, Int Laser Ctr, Moscow 119991, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Чиркин, Анатолий С.
}
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12.
Experimental implementation of
tunable hybrid Tamm-microcavity modes / P. S. Pankin, V. S. Sutormin, V. A. Gunyakov [et al.]> // Appl. Phys. Lett. - 2021. -
Vol. 119
,
Is. 16
. - Ст. 161107,
DOI
10.1063/5.0067179. - Cited References: 60. - The authors are grateful to M. N. Krakhalev for helpful discussions. Electrical control of hybrid modes was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research, Project No. 19-42-240004. Temperature control of hybrid modes was funded by Russian Foundation for Basic Research, Project No. 19-52-52006 and No. MOST 108-2923-E-009-003-MY3, Taiwan. P. S. Pankin is grateful for the support of the President of the Russian Federation under Grant No. MK-4012.2021.1.2. This study was supported by the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center KSC SB RAS . - ISSN 0003-6951. - ISSN 1077-3118
РУБ
Physics, Applied
Рубрики:
STATES
CRYSTALS
LAYER
Аннотация:
Mode hybridization is a unique way to manipulate the mode inside a fixed cavity or at interface. For example, Tamm plasmon-polariton at solid interface can be spectrally shifted without tuning the interface. Experimental implementation of tunable hybrid Tamm-microcavity modes is reported. The hybrid modes are excited in a one-dimensional photonic crystal bounded with a gold layer by attaching a nematic liquid crystal microcavity. Coupling between Tamm plasmon-polariton and microcavity modes leads to repulsion of their dispersion curves controlled by the refractive index of a liquid crystal and the polarization of incident light. Effective tuning of hybrid modes through heating or applying an external electric field to the liquid crystal layer is demonstrated. The experimentally measured strength coupling value between Tamm and microcavity modes was 20.7 meV.
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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
AO NPP Radiosvyaz, Krasnoyarsk 660021, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.
Natl Yang Ming Chiao Tung Univ, Tainan 71150, Taiwan.
Доп.точки доступа:
Pankin, P. S.; Панкин, Павел Сергеевич; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Zelenov, F. V.; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Masyugin, A. N.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Baron, F. A.; Барон, Филипп Алексеевич; Chen, K. P.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk Territory; Krasnoyarsk Region Science and Technology Support Fund [19-42-240004]; Russian Foundation for Basic Research, TaiwanRussian Foundation for Basic Research (RFBR) [19-52-52006, MOST 108-2923-E-009-003-MY3]; Russian FederationRussian Federation [MK-4012.2021.1.2]; Krasnoyarsk Regional Center of Research Equipment of Federal Research Center KSC SB RAS
}
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13.
Fedoseev, A. D.
Realization conditions and the magnetic field dependence of corner excitations in the topological insulator with superconducting coupling on the triangular lattice / A. D. Fedoseev> // J. Exp. Theor. Phys. - 2021. -
Vol. 133
,
Is. 1
. - P. 71-76,
DOI
10.1134/S1063776121060029. - Cited References: 38. - This work was supported by the Russian Foundation for Basic Research (project no. 19-02-00348), Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects: "Study of edge
states
in oneand two-dimensional topological superconductors" (no. 20-42-243005), "Coulomb interactions in the problem of Majorana modes in low-dimensional systems with nontrivial topology" (no. 19-42-240011), and Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (Project MK1641.2020.2) . - ISSN 1063-7761. - ISSN 1090-6509
РУБ
Physics, Multidisciplinary
Рубрики:
EDGE
STATES
ORDER
Аннотация:
The studies of the topological properties of systems have recently been extended due to a new concept of higher-order topological insulators and superconductors. Many models were proposed for two-dimensional systems on a square lattice, where corner excitations can appear; however, the problem of existence of such excitations in superconducting systems with a triangular crystal lattice is still poorly understood. Using a topological insulator in the form of a triangle with a chiral superconducting order parameter as an example, we shows that corner excitations can exist in C3-symmetric systems. In spite of a nontopological character, these excitations have energies inside the gap of the first-order edge excitation spectrum over a wide parameter range and are well localized at the corners of the system. Gapless corner excitations are shown to exist in the system at certain parameters. The application of a magnetic field in the system plane removes the triple degeneracy of the corner excitation energy and makes it possible to control the position of the minimum-energy corner excitation using a magnetic field. At the same time the fine adjustment to achieve the gapless excitations at the chosen corner can be made with changing of the magnetic field value.
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Публикация на русском языке
Федосеев, Александр Дмитриевич. Условия реализации и магнитополевая зависимость угловых возбуждений в топологическом изоляторе со сверхпроводящим спариванием на треугольной решетке [Текст] / А. Д. Федосеев // Журн. эксперим. и теор. физ. - 2021. - Т. 160 Вып. 1. - С. 88-94
Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Федосеев, Александр Дмитриевич; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory [19-02-00348]; Krasnoyarsk Regional Fund of Science [20-42-243005]; "Coulomb interactions in the problem of Majorana modes in low-dimensional systems with nontrivial topology" [19-42-240011]; Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific SchoolsLeading Scientific Schools Program [MK1641.2020.2]
}
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14.
Model of a
tunable hybrid Tamm mode-liquid crystal device / M. V. Pyatnov, R. G. Bikbaev, I. V. Timofeev, S. Y. Vetrov> // Appl. Optics. - 2020. -
Vol. 59
,
Is. 21
. - P. 6347-6351,
DOI
10.1364/AO.395901. - Cited References: 37. - Russian Foundation for Basic Research (19-52-52006) . - ISSN 1559-128X. - ISSN 2155-3165
РУБ
Optics
Рубрики:
PLASMON
PHASE
SENSOR
STATES
Аннотация:
A concept of an easily tunable device based on hybrid Tamm modes is proposed. The device can be controlled using a high-sensitivity chiral liquid crystal serving as a mirror. The coupling of the chiral optical Tamm state with the Tamm plasmons is predicted. The Tamm plasmons are excited at different frequencies for the orthogonal linear polarizations, while the chiral Tamm state is excited at only one frequency. The properties of the proposed model are analytically and numerically calculated. The possibility of creating a two- and three-mode laser with tunable characteristics on the basis of the proposed model is discussed.
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Держатели документа:
Russian Acad Sci, Fed Res Ctr, Kirensky Inst Phys, Siberian Branch,Krasnoyarsk Sci Ctr, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Доп.точки доступа:
Pyatnov, M. V.; Пятнов, Максим Владимирович; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Timofeev, I. V.; Тимофеев, Иван Владимирович; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-52006]
}
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15.
Pankin, P. S.
Tamm plasmon in a structure with the nanocomposite containing spheroidal core-shell particles / P. S. Pankin, S. Y. Vetrov, I. V. Timofeev> // J. Opt. - 2019. -
Vol. 21
,
Is. 3
. - Ст. 035103,
DOI
10.1088/2040-8986/ab04d8. - Cited References: 49. - This study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project No. 17-42-240464. P S P acknowledges the support of the Scholarship of the President of the Russian Federation No. SP-227.2016.5. . - ISSN 2040-8978. - ISSN 2040-8986
РУБ
Optics
Рубрики:
DIMENSIONAL PHOTONIC CRYSTAL
ENHANCEMENT
EMISSION
STATES
Кл.слова (ненормированные):
Tamm plasmon
--
nanocomposite
--
photonic crystal
--
core-shell particles
Аннотация:
Spectral peculiarities of the structure consisting of a photonic crystal coated with a nanocomposite (NC) have been investigated. The NC used contains spheroidal nanoparticles with a dielectric core and a metallic shell, which are uniformly dispersed in a transparent matrix. The spectral manifestation of the observed Tamm plasmon polariton (TPP) and Fabry-Perot mode has been examined. A significant polarization sensitivity of the spectra upon variation in the nanoparticle shape has been demonstrated. The dispersion curves presented for the TPP and Fabry-Perot mode are shown to be in good agreement with the spectra obtained by the transfer matrix method.
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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Polytech Inst, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Панкин, Павел Сергеевич; Russian Foundation for Basic Research; Government of the Krasnoyarsk Territory; Krasnoyarsk Territorial Foundation [17-42-240464]; Scholarship of the President of the Russian Federation [SP-227.2016.5]
}
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16.
Pyatnov, M. V.
Tunable hybrid optical modes in a bounded cholesteric liquid crystal with a twist defect / M. V. Pyatnov, S. Y. Vetrov, I. V. Timofeev> // Phys. Rev. E. - 2018. -
Vol. 97
,
Is. 3
. - Ст. 032703,
DOI
10.1103/PhysRevE.97.032703. - Cited References:47. - The reported study was funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund for the research Projects No. 17-42-240464 and No. 18-42-243025. . - ISSN 2470-0045. - ISSN 2470-0053
РУБ
Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
SCULPTURED THIN-FILMS
STRUCTURE ADJACENT
TAMM PLASMONS
STATES
METAL
Аннотация:
Coupling between the defect mode of a cholesteric liquid crystal and the localized mode of a cholesteric liquid crystal-phase plate-metal structure is theoretically demonstrated. It is shown that the transmittance spectrum can be tuned by changing the twist-defect angle and helix pitch, which are governed by external factors. The spectra for different circular polarizations of the incident light are different; specifically, at the nondiffracting polarization, there is no defect-mode transmittance peak.
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Держатели документа:
Siberian Fed Univ, Inst Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
SB RAS, Fed Res Ctr KSC, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund [17-42-240464, 18-42-243025]
}
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17.
Bikbaev, R. G.
Hyperbolic metamaterial for the Tamm plasmon polariton application / R. G. Bikbaev, S. Y. Vetrov, I. V. Timofeev> // J. Opt. Soc. Am. B. - 2020. -
Vol. 37
,
Is. 8
. - P. 2215-2220,
DOI
10.1364/JOSAB.394935. - Cited References: 51. - Russian Foundation for Basic Research (18-32-00053, 19-42-240004, 19-52-52006) . - ISSN 0740-3224. - ISSN 1520-8540
РУБ
Optics
Рубрики:
PHOTONIC CRYSTAL
PERFECT ABSORBER
STATES
HETEROSTRUCTURES
Аннотация:
The possibility of using a hyperbolic metamaterial to form conventional and epsilon-near-zero Tamm plasmon polaritons in the near-infrared and visible spectral ranges is demonstrated. The spectral properties of the hyperbolic metamaterial are investigated in the framework of the effective medium theory and confirmed by the transfer matrix method. It is found that at the oblique incidence of light onto a structure, the I-type hyperbolic metamaterial can be implemented, while II-type cannot. The sensitivity of the epsilon-near-zero wavelength to the variation in the angle of light incidence for TE and TM waves is demonstrated. It is shown that both the high-quality and broadband Tamm plasmon polaritons are excited in the investigated structures.
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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Бикбаев, Рашид Гельмединович; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-32-00053, 19-42-240004, 19-52-52006]
}
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18.
Bulgakov, E. N.
Interaction between dielectric particles enhances the Q-factor / E. Bulgakov, K. Pichugin, A. Sadreev> // Adv. Electromagn. - 2019. -
Vol. 8
,
Is. 4
. - P. 108-117,
DOI
10.7716/aem.v8i4.1292. - Cited References: 36. - We acknowledge discussions with A.A. Bogdanov and D.N. Maksimov. This work was partially supported by RFBR grant 19-02-00055 and Ministry of Education and Science of Russian Federation (state contract N 3.1845.2017/4.6). . - ISSN 2119-0275
РУБ
Engineering, Electrical & Electronic
Рубрики:
WHISPERING-GALLERY MODES
MULTIPLE-SCATTERING
STATES
Аннотация:
We study behavior of resonant modes with a distance between two dielectric resonators shaped as cylinders and disks. We reveal two basic scenarios of evolution of resonances with the distance between the cylinders. For larger distances and respectively weaker interaction of particles the resonances are bound around the resonances of isolated resonators and evolve by spiral way. For shorter distances and respectively stronger interaction the resonances bypass the isolated resonances. Both scenarios demonstrate considerable enhancement of the Q factor compared to the case of isolated particle.
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Держатели документа:
RAN, Kirensky Inst Phys, Siberian Branch, Fed Res Ctr KSC, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.
Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; RFBRRussian Foundation for Basic Research (RFBR) [19-02-00055]; Ministry of Education and Science of Russian FederationMinistry of Education and Science, Russian Federation [3.1845.2017/4.6]
}
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19.
Bulgakov, E. N.
Symmetry breaking in a T-shaped photonic waveguide coupled with two identical nonlinear cavities / E. . Bulgakov, A. . Sadreev> // Phys. Rev. B. - 2011. -
Vol. 84
,
Is. 15
. - Ст. 155304,
DOI
10.1103/PhysRevB.84.155304. - Cited References: 40. - A.S is grateful to Boris Malomed for fruitful discussions about symmetry breaking. The work is partially supported by RFBR grant 12-02-00483. . - ISSN 1098-0121
РУБ
Physics, Condensed Matter
Рубрики:
MODE THEORY
NUCLEAR REACTIONS
UNIFIED THEORY
SYSTEM
FIBER
RESONANCE
DYNAMICS
STATES
Аннотация:
We consider light transmission in a T-shaped photonic waveguide coupled with two identical symmetrically positioned nonlinear microcavities. We present two types of symmetry breaking. The first one is a result of mixing of the symmetric input wave with antisymmetric bound
states
in the Fabry-Perot interferometer architecture. Similarly, the second mechanism of the symmetry breaking is the result of mixing the symmetrical input wave with the antibonding bound state in a straight waveguide coupled with two cavities positioned perpendicular to the waveguide. In both cases the mixing is due to nonlinearity. In turn, the symmetry-breaking solutions give rise to nonsymmetrical outputs in the T-shape waveguide. These effects are directly demonstrated by the electromagnetic field solutions which are complimented by coupled mode theory for the light transmission.
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Держатели документа:
[Bulgakov, Evgeny
Sadreev, Almas] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Bulgakov, Evgeny] Siberian State Aerosp Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirensky Institute of Physics, 660036, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk Rabochii, 31, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
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20.
Kolovsky, A. R.
Bose-Hubbard Hamiltonian: Quantum chaos approach / A. R. Kolovsky> // Int. J. Mod. Phys. B. - 2016. -
Vol. 30
,
Is. 10
. - Ст. 1630009,
DOI
10.1142/S0217979216300097. - Cited References:42 . - ISSN 0217-9792. - ISSN 1793-6578
Перевод заглавия:
Гамильтониан Бозе-Хаббарда: подход с точки зрения квантового хаоса
РУБ
Physics, Applied + Physics, Condensed Matter + Physics, Mathematical
Рубрики:
Optical lattice
Dynamics
Atoms
States
Model
Кл.слова (ненормированные):
Cold atoms in optical lattices
--
quantum transport
--
nonlinear dynamics and chaos
Аннотация:
We discuss applications of the theory of quantum chaos to one of the paradigm models of many-body quantum physics - the Bose-Hubbard (BH) model, which describes, in particular, interacting ultracold Bose atoms in an optical lattice. After preliminary, pure quantum analysis of the system we introduce the classical counterpart of the BH model and the governing semiclassical equations of motion. We analyze these equations for the problem of Bloch oscillations (BOs) of cold atoms where a number of experimental results are available. The paper is written for nonexperts and can be viewed as an introduction to the field.
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Доп.точки доступа:
Коловский, Андрей Радиевич
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