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Alekseev, K. N.
Strange attractor in resonant tunneling / K. N. Alekseev, G. P. Berman, D. K. Campbell // Phys. Rev. B. - 1998. - Vol. 58, Is. 7. - P. 3954-3962, DOI 10.1103/PhysRevB.58.3954. - Cited References: 38 . - ISSN 0163-1829

РУБ Physics, Condensed Matter
Рубрики:
INTRINSIC BISTABILITY
   RING CAVITY
   OPTICAL TURBULENCE
   TRANSMITTED LIGHT
   QUANTUM-WELLS
   OSCILLATIONS
   BARRIERS
   SYSTEM
   STATE
   TIME
Аннотация: We consider the process of resonant electron tunneling through a double-barrier potential, taking into account nonlinear dynamical effects generated by charge accumulation in the interbarrier space. We use the perturbation approach of Davydov and Ermakov, which was developed for investigating intrinsic bistability in resonant tunneling. For incoming electron flow, which is modulated slowly in time, we show that the resulting nonlinear dynamics can become chaotic, with the chaos described (because of the open nature of the system) by a strange attractor. We determine the conditions for the existence of this strange attractor and estimate characteristic experimental parameters for its observation.

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Держатели документа:
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Univ Calif Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
Univ Calif Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA
Univ Illinois, Dept Phys, Urbana, IL 61801 USA
ИФ СО РАН

Доп.точки доступа:
Berman, G. P.; Campbell, D. K.
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Aplesnin, S. S.
Magnetoresistance effect in anion-substituted manganese chalcogenides / S. S. Aplesnin, O. B. Romanova, K. I. Yanushkevich // Phys. Status Solidi B. - 2015. - Vol. 252, Is. 8. - P. 1792-1798, DOI 10.1002/pssb.201451607. - Cited References: 35. - This study was supported by the official assignment no. 114090470016. . - ISSN 0370. - ISSN 1521-3951. -

РУБ Physics, Condensed Matter
Рубрики:
MAGNETIC-PROPERTIES
   ELECTRONIC-STRUCTURE
   SOLID-SOLUTIONS
   MnTe
   MnSe
   CONDUCTIVITY
   TRANSITION
Кл.слова (ненормированные):
Electron tunneling -- Magnetic properties -- Magnetoresistance -- Semiconductors
Аннотация: The electric and magnetic properties of anion-substituted antiferromagnetic MnSe1-xTex (0.1≤x≤0.4) semiconductors in the 77-700K temperature range and magnetic fields under 1T are studied. In the MnSe1-xTex solid solutions, negative magnetoresistance in the vicinity of the Néel temperature for x=0.1 and for composition with x=0.2 in the paramagnetic range below 270K is revealed. A dependence of the magnetic susceptibility versus the prehistory of the samples is found. The model of localized spin-polarized electrons with the localization radius depending on the magnetic field is proposed for x=0.1. In the paramagnetic range, the negative magnetoresistance and the behavior of magnetic moment are a result of orbital glass formation.

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Держатели документа:
Kirensky Institute of Physics SB RAS, Akademgorodok 50, Krasnoyarsk, Russian Federation
Siberian State Aerospace University M F Reshetnev, Krasnoyarsky Rabochy Av. 31, Krasnoyarsk, Russian Federation
Scientific-Practical Materials Research Center NAS, P. Brovski Str.19, Minsk, Belarus

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Янушкевич, Казимир Иосифович; Yanushkevich K. I.; Аплеснин, Сергей Степанович
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Ba0.6K0.4BiO3 single crystal as a multiple Josephson system: New coherent effect? / L. N. Zherikhina [et al.] // Journal of Physics: Conference Series. - 2012. - Vol. 400, Pt. 2. - Ст. 022146. - P. , DOI 10.1088/1742-6596/400/2/022146 . - ISSN 1742-6588
Кл.слова (ненормированные):
Antiphase -- Coherent effect -- Electric transport -- High-T -- Inhomogeneous superconductors -- Josephson -- Josephson junctions -- Josephson tunneling -- Non-linear I-V -- Polycrystalline samples -- Superconducting gaps -- Superconducting state -- Low temperature effects -- Low temperature engineering -- Magnetic fields -- Superconductivity -- Single crystals
Аннотация: The existence of space inhomogeneous superconductor insulator state (SISIS) found out earlier in polycrystalline samples of high-Tc system Ba0.6K0.4BiO3 (Tc?30 K) is confirmed on Ba0.6K0.4BiO3 single crystal. At T* (T*<Tc, T*?17 K) the transition from the homogeneous superconducting state into the SISIS occurs. SISIS is characterized by the appearance of two gapes on the Fermi surface: semi- and superconducting, that are modulated in space in antiphase, the electric transport between superconducting regions being carried out due to Josephson tunneling. Thus the whole sample becomes a multiple Josephson system. Nonlinear I-V curves, depended on temperature and magnetic field, that are typical to a Josephson system, are observed on Ba0.6K0.4BiO3 single crystal at temperatures below T*. Besides, a step like peculiarity at the values of voltage of the order of one and two superconducting gaps shows up. These peculiarities are suppressed by magnetic field much earlier then critical current. Perhaps the last phenomenon is the consequence of "coherent" state of several successive Josephson junctions, appeared in the exfoliation state. В© Published under licence by IOP Publishing Ltd.

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Доп.точки доступа:
Zherikhina, L. N.; Tskhovrebov, A. M.; Klinkova, L. A.; Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; International Conference on Low Temperature Physics(26 ; 2011 ; Aug. ; 1-17 ; Beijing, China)
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Bulgakov, E. N.
Current-voltage characteristics of the resonant tunnelling double-barrier structure under time-periodical perturbation / E. N. Bulgakov, A. F. Sadreev // J. Phys.: Condens. Matter. - 1996. - Vol. 8, Is. 45. - P. 8869-8887, DOI 10.1088/0953-8984/8/45/020. - Cited References: 38 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
SEMICONDUCTOR DOUBLE-BARRIER
   OSCILLATING QUANTUM-WELL
   DEPENDENT TRANSPORT
   INFRARED-RADIATION
   TUNNELING TIMES
   HETEROSTRUCTURES
   TRANSMISSION
   MODEL
   FREQUENCIES
   COHERENT
Аннотация: We consider a typical semiconductor resonant tunnelling GaAs/AlGaAs/GaAs nanostructure which forms a double-barrier potential with quasienergy levels corresponding to transition frequencies in the infrared and microwave regions. Two types of dynamical perturbation of the heterostructure in the form V-1(x, t) = V(1)x cos Omega t and V-2(t) = V-2 cos Omega t are considered. We analyse numerically a reconstruction of the electron transmission through the heterostructure and the current-voltage characteristics (IVC) under the influence of these dynamical perturbations. Both weak and strong perturbations are considered. We investigate the dependences of the transmission on the electron energy and the frequency of the external field with the main accent on the case where a frequency of the perturbation is tuned to a transition between quasienergies of the double-barrier structure. it is found that these resonant phenomena give rise to new peaks and dips in the IVC. In particular, it is shown that the dipole type of perturbation V-1(x, t) gives rise to a Rabi splitting of the transmission peaks and under certain conditions to a Rabi splining of the IVC peaks and dips. We demonstrate that dynamical perturbation may induce a direct current opposite to the direction of the applied voltage, and that this phenomenon takes the form of a sharp dip which has a resonant origin. It is observed that the dipole type of perturbation V-1(x, t) of laser radiation is more effective for tuning the IVC than the first perturbation V-2(t). Also absorption and emission of energy by an electron transmitted through the DBRTS are considered.

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Держатели документа:
Kirensky Institute of Physics, 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
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    Bulgakov, E. N.
    Induced tunneling and localization for a quantum particle in tilted two-dimensional lattices / E. N. Bulgakov, A. R. Kolovsky // Phys. Rev. B. - 2014. - Vol. 89, Is. 3. - Ст. 035116, DOI 10.1103/PhysRevB.89.035116. - Cited References: 17. - The authors express their gratitude to D. N. Maksimov for useful remarks and acknowledge financial support of the Russian Academy of Sciences through the SB RAS integration project No. 29 Dynamics of atomic Bose-Einstein condensates in optical lattices. . - ISSN 1098-0121. - ISSN 1550-235X
   Перевод заглавия: Индуцированное туннелирование и локализация квантовой частицы в наклонных двухмерных решетках

РУБ Physics, Condensed Matter
Рубрики:
DYNAMIC LOCALIZATION
   CHARGED-PARTICLE
   OPTICAL LATTICE
   ELECTRIC-FIELD
   DIRAC POINTS
Аннотация: We consider a quantum particle in tilted two-dimensional lattices in the tight-binding approximations. We show that for certain lattice geometries the particle can freely move across the lattice in the direction perpendicular to the vector of the static force. This effect is argued to be analog of the photon-induced tunneling in driven one-dimensional lattices. We calculate the particle dispersion relation by using a method based on the Bogoliubov-Mitropolskii averaging technique from the theory of dynamical systems. This dispersion relation draws the analogy with driven one-dimensional lattices further by eventually showing band collapses when a control parameter is varied.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Kolovsky, A. R.; Коловский, Андрей Радиевич; Булгаков, Евгений Николаевич; Russian Academy of Sciences through the SB RAS [29]
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Effect of cotunneling and spin polarization on the large tunneling magnetoresistance effect in granular C60-Co films / S. Sakai [et al.] // Physical Review B: Condensed Matter and Materials Physics. - 2011. - Т. 83, № 17. - P174422, DOI 10.1103/PhysRevB.83.174422 . - ISSN 1098-0121. - ISSN 1550-235X

РИНЦ
Держатели документа:
Advanced Science Research Center,Japan Atomic Energy Agency
Department of Energy Science and Technology,Kyoto University
Institute for Materials Research,Tohoku University
National Institute for Materials Science

Доп.точки доступа:
Sakai, S.; Sugai, I.; Takanashi, K.; Matsumoto, Y.; Entani, S.; Naramoto, H.; Avramov, P.; Maeda, Y.; Mitani, S.
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Fransson, J.
A perfect spin-filter quantum dot system / J. . Fransson, I. . Sandalov, O. . Eriksson // J. Phys.: Condens. Matter. - 2004. - Vol. 16, Is. 16. - P. L249-L254, DOI 10.1088/0953-8984/16/16/L03. - Cited References: 39 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
NARROW ENERGY BANDS
   ELECTRON CORRELATIONS
   MAGNETIC-FIELD
   MAGNETOTRANSPORT
   CONDUCTANCE
   RESISTANCE
   BARRIER
   FORMULA
   VALVE
   LIMIT
Кл.слова (ненормированные):
Electric potential -- Electron tunneling -- Magnetic couplings -- Magnetic fields -- Magnetic filters -- Transport properties -- Electron correlations -- Magnetic contacts -- Source-drain voltage -- Spin projections -- Semiconductor quantum dots
Аннотация: The discovery of a novel effect in the transport through a QD spin-dependently coupled to magnetic contacts is reported. For a finite range of source-drain voltages the spin projections of the current cancel exactly, resulting in a completely suppressed output current. The spin down current behaves as one normally expects whereas the spin up current becomes negative. As the source-drain voltage is increased the spin up current eventually becomes positive. Thus, tuning the source-drain voltage such that the spin up current vanishes will result in a perfect spin filter.

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Держатели документа:
Royal Inst Technol, Dept Phys, KTH, SE-10691 Stockholm, Sweden
Univ Uppsala, Dept Phys, SE-75121 Uppsala, Sweden
RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Max Planck Inst Phys Complex Syst, D-01187 Dresden, Germany
ИФ СО РАН
Department of Physics, Royal Institute of Technology (KTH), SE-106 91 Stockholm, Sweden
Physics Department, Uppsala University, Box 530, SE-751 21 Uppsala, Sweden
Kirensky Institute of Physics, RAS, 660036 Krasnoyarsk, Russian Federation
Max-Plank-Inst. Phys. Complex Sys., Nothnitzer Stra?e 38, 01187 Dresden, Germany
Dept. of Mat. Sci. and Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden

Доп.точки доступа:
Sandalov, I.; Eriksson, O.
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Kagan, M. Y.
Anomalous superconductivity and superfluidity in repulsive fermion systems / M. Y. Kagan, V. A. Mitskan, M. M. Korovushkin // Phys. Usp. - 2015. - Vol. 58, Is. 8. - P. 733-761, DOI 10.3367/UFNe.0185.201508a.0785. - Cited References: 369. - We are grateful to M A Baranov, A V Chubukov, D V Efremov, M V Feigel'man, V V Kabanov, K I Kugel', M S Marienko, N M Plakida, N V Prokorev, A Ya Tzalenchuk, and V V Val'kov for the fruitful discussions and constant attention to our work. The work was supported by the Russian Foundation for Basic Research (project nos. 14-02-00058 and 14-02-31237). M Yu K thanks the Program of Basic Research of the National Research University Higher School of Economics for support. The work of MM K was supported by grant of the President of the Russian Federation (SP-1361.2015.1) and the Dinasty Foundation . - ISSN 1063-7869

РУБ Physics, Multidisciplinary
Рубрики:
HEXAGONAL BORON-NITRIDE
   SCANNING-TUNNELING-MICROSCOPY
   2-DIMENSIONAL HUBBARD-MODEL
   HIGH-TC SUPERCONDUCTIVITY
   ELECTRON-ENERGY SPECTRUM
   P-WAVE SUPERCONDUCTIVITY
   DOUBLE-LAYER GRAPHENE
   2D KONDO-LATTICE
   GROUND-STATE
   TRANSITION-TEMPERATURE
Кл.слова (ненормированные):
anomalous superconductivity -- Kohn-Luttinger mechanism -- superfluidity -- repulsive Fermi gas -- Hubbard and t-Jmodel -- Shubin Vonsovsky model -- graphene monolayer -- graphene bilayer
Аннотация: We discuss the mechanisms of unconventional superconductivity and superfluidity in 3D and 2D fermionic systems with purely repulsive interaction at low densities. We construct phase diagrams of these systems and find the areas of the superconducting state in free space, as well as on the lattice in the framework of the Fermi-gas model with hard-core repulsion, the Hubbard model, the Shubin-Vonsovsky model, and the t-J model. We demonstrate that the critical superconducting temperature can be greatly increased in the spin-polarized case or in a two-band situation already at low densities. The proposed theory is based on the Kohn-Luttinger mechanism or its generalizations and explains or predicts anomalous p-, d-, and f-wave pairing in various materials, such as high-temperature superconductors, the idealized monolayer and bilayer of doped graphene, heavy-fermion systems, layered organic superconductors, superfluid 3He, spin-polarized 3He mixtures in 4He, ultracold quantum gases in magnetic traps, and optical lattices.

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Публикация на русском языке Каган, Максим Юрьевич. Аномальная сверхпроводимость и сверхтекучесть в фермионных системах с отталкиванием [Текст] / М. Ю. Каган, В. А. Мицкан, М. М. Коровушкин // Успехи физ. наук : ред. журн. "Успехи физ. наук", 2015. - Т. 185 № 8. - С. 785-815

Держатели документа:
Kapitza Institute for Physical Problems, Russian Academy of Sciences, ul. Kosygina 2, Moscow, Russian Federation
National Research University, Higher School of Economics, ul. Myasnitskaya 20, Moscow, Russian Federation
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50, str. 38, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, prosp. Gazety Krasnoyarskii rabochii 31, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mitskan, V. A.; Мицкан, Виталий Александрович; Korovushkin, M. M.; Коровушкин, Максим Михайлович
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Karpov, S. V.
The role of the electron tunneling effect in the coagulation kinetics of polydisperse metal nanocolloids / S. V. Karpov, P. N. Semina, A. P. Gavrilyuk // Colloid J. - 2012. - Vol. 74, Is. 3. - P. 305-312, DOI 10.1134/S1061933X12030052. - Cited References: 16. - Authors are thankful to G. A. Chiganova for discussions and helpful comments. Studies were carried out with the support of grants: the Presidium of RAS No 29 and No 31, OFN RAS III.9.5, IP SB RAS No 43, IP SB RAS (and SFU) No 101. . - ISSN 1061-933X

РУБ Chemistry, Physical
Рубрики:
PARTICLES
Аннотация: The energy of pair interactions between metal nanoparticles of different sizes is shown to be able to increase upon coagulation due to the additional electrostatic effect resulting from mutual heteropolar charging of the particles. The tunnel electron transfer occurring upon the collisions between particles of different sizes may be the reason for the charging. The transfer is caused by the dependence of the electron work function on the particle size. The electron transfer through the interparticle gap equalizes the Fermi levels in particles of different sizes and is associated with this dependence. Using the example of bimodal silver nanocolloids, it is shown that mutual heteropolar charging of particles with different sizes may accelerate the coagulation of polydisperse colloidal systems by an order of magnitude or more as compared with monodisperse systems, in which this effect is absent.

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Публикация на русском языке Карпов, Сергей Васильевич. Роль электронного туннельного эффекта в кинетике коагуляции полидисперсных наноколлоидов металлов [Текст] / С. В. Карпов, П. Н. Сёмина, А. П. Гаврилюк // Коллоид. журн. - М. : Наука, 2012. - Т. 74 № 3. - С. 329-336

Держатели документа:
[Karpov, S. V.
Semina, P. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Karpov, S. V.] Siberian Fed Univ, Krasnoyarsk 660028, Russia
[Gavrilyuk, A. P.] Russian Acad Sci, Siberian Branch, Inst Computat Modeling, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Semina, P. N.; Семина, Полина Николаевна; Gavrilyuk, A. P.; Карпов, Сергей Васильевич
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10.

Kolovsky, A. R.
Bistability and chaos-assisted tunneling in dissipative quantum systems / A. R. Kolovsky // Phys. Rev. E. - 2022. - Vol. 106, Is. 1. - Ст. 014209, DOI 10.1103/PhysRevE.106.014209. - Cited References: 21. - The author acknowledges financial support from the Russian Science Foundation through Grant No. 19-12-00167 . - ISSN 2470-0045
Кл.слова (ненормированные):
Bi-stability -- Chaos-assisted tunneling -- Dissipative quantum systems -- Double resonance -- Driving frequencies -- Limit-cycle -- Multistability -- Non-linear oscillators -- Quantum limit -- Resonance model
Аннотация: We revisit the problem of quantum bi- and multistability by considering the dissipative double resonance model. For a large driving frequency, this system has a simpler phase structure than the driven dissipative nonlinear oscillator, the paradigm model for classical and quantum bistability. This allows us to obtain an analytical estimate for the lifetime of quantum limit cycles. On the other hand, for a small driving frequency, the system is much richer than the nonlinear oscillator. This allows us to address a novel phenomenon of dissipation- and chaos-assisted tunneling between quantum limits cycles.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Коловский, Андрей Радиевич
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