Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>S=PROBE<.>)

Общее количество найденных документов : 4
Показаны документы с 1 по 4

Phase transitions and crystal-field and exchange interactions in TbFe3(BO3)4 as seen via optical spectroscopy / M. N. Popova [et al.] // J. Phys.: Condens. Matter. - 2012. - Vol. 24, Is. 19. - Ст. 196002, DOI 10.1088/0953-8984/24/19/196002. - Cited References: 45. - The assistance of E P Chukalina is acknowledged. This work was supported in part by the Russian Foundation for Basic Research (grants No 10-02-01071-a and No 09-02-00171-a), by the Ministry of Education and Science (grant HIII-4828.2012.2), and by the Russian Academy of Sciences under the Programs for Basic Research. . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
IRON BORATE GDFE3(BO3)4
PROBE
ION
Аннотация: High-resolution polarized broadband (1800–23 000 cm−1) optical absorption spectra of Tb3+ in TbFe3(BO3)4 single crystals are studied between room temperature and 4.2 K. The spectral signatures of the structural (R32–P3121, TS = 192 K) and magnetic (TN = 41 K) phase transitions are found and analyzed. Energies and symmetries of the Tb3+ crystal-field (CF) levels were determined for both the high-temperature R32 and the low-temperature P3121 structures of TbFe3(BO3)4 and compared with the calculated ones. It follows unambiguously from the spectral data that the ground state is the Γ1 + Γ2 quasi-doublet of the local D3 point symmetry group for Tb3+ in the R32 high-temperature structure. The CF calculations revealed the CF parameters and wavefunctions for Tb3+ in TbFe3(BO3)4. The value of the Tb–Fe exchange integral and of the effective magnetic field created by the ordered Fe subsystem were estimated as Jfd = 0.26 K and Beff = 3.92 T, using the observed splitting Δ = 32 cm−1 of the Tb3+ ground quasi-doublet at the temperature 5 K. The reliability of the obtained parameters was proven by modeling the literature data on the magnetic susceptibility of TbFe3(BO3)4. Lattice distortions below TS were evidenced by the observed changes of probabilities of the forced electric dipole transitions of Tb3+.

Смотреть статью,
Scopus,
WoS,
Читать в сети ИФ
Держатели документа:
[Popova, M. N.] Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
[Stanislavchuk, T. N.] New Jersey Inst Technol, Dept Phys, Newark, NJ 07102 USA
[Malkin, B. Z.] Kazan Fed Univ, Kazan 420008, Russia
[Bezmaternykh, L. N.] RAS, Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Popova, M. N.; Stanislavchuk, T. N.; Malkin, B. Z.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
Найти похожие

Spectroscopic properties and structure of the ErFe3(BO3)4 single crystal / A. V. Malakhovskii [et al.] // Phys. Solid State. - 2014. - Vol. 56, Is. 10. - P. 2056-2063, DOI 10.1134/S1063783414100199. - Cited References: 28. - This study was supported by the Russian Foundation for Basic Research (project no. 12-02-00026), the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (grant no. NSh-2886.2014.2), and the Department of Physical Sciences of the Russian Academy of Sciences (program no. 3.9.5). . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
RARE-EARTH IONS
   ABSORPTION INTENSITIES
   Er3+ IONS
   SPECTRA
   PROBE
Аннотация: Single crystals of the ErFe3(BO3)4 borate were synthesized and their structure was studied. Absorption spectra of the Er3+ ion in σ- and π-polarizations of f-f transitions 4 I 15/2 → 4 I 13/2, 4 I 11/2, 4 I 9/2, 4 F 9/2, 4 S 3/2, 2 H 11/2, and 4 F 7/2 were measured. The refractive index and birefringence were measured as a function of the wavelength. The transition intensities were analyzed within the Judd-Ofelt theory, and the following parameters of the theory were obtained: Ω2 = 7.056 × 10−20 cm2, Ω4 = 1.886 × 10−20 cm2, and Ω6 = 2.238 × 10−20 cm2. Using these parameters, the radiative transition probabilities, luminescence branching ratios, and radiative lifetimes of multiplets were calculated.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ

Публикация на русском языке Спектроскопические свойства и структура монокристалла ErFe3(BO3)4 [Текст] / А. В. Малаховский [и др.] // Физ. тверд. тела. - 2014. - Т. 56 Вып. 10. - С. 1991-1998

Держатели документа:
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Malakhovskii, A. V.; Малаховский, Александр Валентинович; Sokolov, V. V.; Sukhachev, A. L.; Сухачев, Александр Леонидович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Molokeev, M. S.; Молокеев, Максим Сергеевич; Russian Foundation for Basic Research [12-02-00026]; Council on Grants from the Russian Federation for Support of Leading Scientific Schools [NSh-2886.2014.2]; Department of Physical Sciences of the Russian Academy of Sciences [3.9.5]
}
Найти похожие

Bulgakov, E. N.
Phase rigidity and avoided level crossings in the complex energy plane / E. N. Bulgakov, I. . Rotter, A. F. Sadreev // Phys. Rev. E. - 2006. - Vol. 74, Is. 5. - Ст. 56204, DOI 10.1103/PhysRevE.74.056204. - Cited References: 40 . - ISSN 1539-3755

РУБ Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
OPEN QUANTUM-SYSTEMS
   FANO RESONANCES
   S-MATRIX
   DOT
   CONTINUUM
   TRANSMISSION
   COHERENCE
   TRANSPORT
   BILLIARDS
   PROBE
Кл.слова (ненормированные):
Eigenvalues and eigenfunctions -- Hamiltonians -- Resonance -- Rigidity -- Semiconductor quantum dots -- Biorthogonal eigenfunctions -- Open quantum system -- Phase rigidity -- Quantum theory
Аннотация: We consider the effective Hamiltonian of an open quantum system, its biorthogonal eigenfunctions phi(lambda), and define the value r(lambda)=(phi(lambda)parallel to phi(lambda))/ that characterizes the phase rigidity of the eigenfunctions phi(lambda). In the scenario with avoided level crossings, r(lambda) varies between 1 and 0 due to the mutual influence of neighboring resonances. The variation of r(lambda) is an internal property of an open quantum system. In the literature, the phase rigidity rho of the scattering wave function Psi(E)(C) is considered. Since Psi(E)(C) can be represented in the interior of the system by the phi(lambda), the phase rigidity rho of the Psi(E)(C) is related to the r(lambda) and therefore also to the mutual influence of neighboring resonances. As a consequence, the reduction of the phase rigidity rho to values smaller than 1 should be considered, at least partly, as an internal property of an open quantum system in the overlapping regime. The relation to measurable values such as the transmission through a quantum dot, follows from the fact that the transmission is, in any case, resonant at energies that are determined by the real part of the eigenvalues of the effective Hamiltonian. We illustrate the relation between phase rigidity rho and transmission numerically for small open cavities.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Linkoping Univ, Dept Phys & Measurement Technol, S-58183 Linkoping, Sweden
ИФ СО РАН
Max-Planck-Institut fur Physik Komplexer Systeme, D-01187 Dresden, Germany
Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation
Department of Physics and Measurement, Technology Linkoping University, S-581 83 Linkoping, Sweden

Доп.точки доступа:
Rotter, I.; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
Найти похожие

High-resolution x-ray spectra of carbon monoxide reveal ultrafast dynamics induced by long UV pulse / J. C. Liu, V. Savchenko, V. Kimberg [et al.] // New J. Phys. - 2021. - Vol. 23, Is. 6. - Ст. 063030, DOI 10.1088/1367-2630/ac0198. - Cited References: 47. - The reported study was funded by RFBR, project number 19-29-12015. J-CL thanks the support by the National Science Foundation of China under Grant Nos. 11974108, 11574082, and the Fundamental Research Funds for the Central Universities (No. 2021MS046). MO acknowledges funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skodowska-Curie Grant Agreement No. 860553 and the Carl Tryggers Foundation (contract CTS18:285). FG acknowledges also the support from the Helmholtz Virtual Institute VI419 'Dynamic Pathways in Multidimensional Landscapes'. VK acknowledges the Swedish Research Council (VR 2019-03470). The calculations were partially enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) partially funded by the Swedish Research Council through Grant Agreement No. 2018-05973 . - ISSN 1367-2630

РУБ Physics, Multidisciplinary
Рубрики:
VIBRATIONAL STRUCTURE
   SCATTERING
   RAMAN
   CO
   COLLAPSE
   PROBE
Кл.слова (ненормированные):
UV pump-x-ray probe -- molecular spectroscopy -- ultrafast dynamics -- potential energy surfaces -- x-ray absorption
Аннотация: In theoretical simulations of a UV + x-ray pump-probe (UVX-PP) setup, we show that frequency detuning of the pump UV pulse acts as a camera shutter by regulating the duration of the UVX-PP process. This two-photon absorption with long overlapping UV and x-ray pulses, allowing for high spectral resolution, thereby provides information about ultrafast dynamics of the nuclear wave packet without the requirement of ultrashort pulses and controlled delay times. In a case study of carbon monoxide, the calculated UVX-PP spectra of the O1s−12π1 and C1s−12π1 core-excited states show different vibrational profiles. The interference of intermediate vibrational states reveals details of nuclear dynamics in the UVX-PP process related to a variable duration time controlled by the UV detuning. Both O1s−12π1 and C1s−12π1 pump-probe channels display a splitting of the spectral profile, which however is associated with different physical mechanisms. At the O1s−12π1 resonance, the observed dispersive and non-dispersive spectral bands intersect and result in destructive interference.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
North China Elect Power Univ, Dept Math & Phys, Beijing 102206, Peoples R China.
KTH Royal Inst Technol, Dept Theoret Chem & Biol, S-10691 Stockholm, Sweden.
Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem IRC SQC, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Helmholtz Zentrum Berlin Mat & Energie, Inst Methods & Instrumentat Synchrotron Radiat Re, Albert Einstein Str 15, D-12489 Berlin, Germany.
Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden.

Доп.точки доступа:
Liu, Ji-Cai; Savchenko, Viktoriia; Kimberg, V.; Кимберг, Виктор Валерьевич; Gel'mukhanov, F.; Гельмуханов, Фарис Хафизович; Odelius, Michael; RFBRRussian Foundation for Basic Research (RFBR) [19-29-12015]; National Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11974108, 11574082]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [2021MS046]; European UnionEuropean Commission [860553]; Carl Tryggers Foundation [CTS18:285]; Helmholtz Virtual Institute [VI419]; Swedish Research CouncilSwedish Research CouncilEuropean Commission [VR 2019-03470, 2018-05973]
}
Найти похожие