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    Aleksandrov, K. S.
    Crystal chemistry and prediction of compounds with a structure of skutterudite type / K. S. Aleksandrov, B. V. Beznosikov // Crystallogr. Rep. - 2007. - Vol. 52, Is. 1. - P. 28-36, DOI 10.1134/S106377450701004X. - Cited References: 47 . - ISSN 1063-7745
Рубрики:
SUPERCONDUCTOR PROS4SB12
   MAGNETIC-PROPERTIES
   HIGH-PRESSURE
   RARE-EARTH
   TRANSITION
   LAFE4P12
Аннотация: Crystallochemical analysis of skutterudite-type structures in the BX3, AB(4)X(12), and A B-3' B4O12 compositions (A and B are metals; X = P, As, Sb) has been performed. Probable regions of structure formation are determined, thereby indicating that more than 270 new compounds of the AB4X12 composition can be synthesized.(1)

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Публикация на русском языке Александров, Кирилл Сергеевич. Кристаллохимия и прогноз соединений со структурой типа скуттерудита [Текст] / К. С. Александров, Б. В. Безносиков // Кристаллография. - 2007. - Т. 52 Вып. 1. - С. 32-40

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич
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Val'kov, V. V.
Spin-Fluctuation Renormalization of the Temperature of a Superconducting s-Phase in Rare-Earth Intermetallides / V. V. Val'kov, D. M. Dzebisashvili // J. Exp. Theor. Phys. - 2008. - Vol. 107, Is. 4. - P. 679-691, DOI 10.1134/S1063776108100166. - Cited References: 34. - This study was supported in part by the Russian Foundation for Basic Research ( project no. 07-02-00226), the Department of Physic of the Russian Academy of Sciences ( within the program "Strongly Correlated Electrons in Semiconductors, Superconductors, and Magnetic Materials"), and the Siberian Branch of the Russian Academy of Sciences ( integration project no. 3.4). . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
HEAVY-FERMION SUPERCONDUCTORS
   PERIODIC ANDERSON MODEL
   WAVE SUPERCONDUCTIVITY
   PERTURBATION-THEORY
   MECHANISM
   VALENCE
   SYSTEMS
   LATTICE
   STATE
Кл.слова (ненормированные):
Differential equations -- Electric conductivity -- Green's function -- Numerical analysis -- Rare earth elements -- Spin dynamics -- Spin fluctuations -- Anomalous components -- Critical temperatures -- Experimental datums -- Infinite systems -- Numerical calculations -- Order parameters -- Periodic Anderson models -- Renormalization -- S-phase -- Skutterudite -- Strong electron correlations -- Sub systems -- Superconducting states -- Superconductivity
Аннотация: A theory of the superconducting state with s-type symmetry of the order parameter ( the transition to this state was observed in recently discovered heavy-fermion skutterudite LaFe(4)P(12)) is developed using the periodic Anderson model in the limit of strong electron correlations. Exact representations of Green's functions of the superconducting phase via the normal and anomalous components of the mass and strength operators are obtained. It is shown that an important role in the description of this superconducting phase is played by the anomalous components of the strength operator, which reflect spin-fluctuation processes in the localized subsystem. These components are calculated in the one-loop approximation using the solution of an infinite system of integral equations of self-consistency for the superconducting phase. Numerical calculations show that allowance for the process of scattering on spin fluctuations leads to renormalization of the critical temperature and provides agreement with the experimental data.

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Держатели документа:
[Val'kov, V. V.
Dzebisashvili, D. M.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Val'kov, V. V.
Dzebisashvili, D. M.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Val'kov, V. V.] Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Siberian State Aerospace University, Krasnoyarsk 660014, Russian Federation

Доп.точки доступа:
Dzebisashvili, D. M.; Дзебисашвили, Дмитрий Михайлович; Вальков, Валерий Владимирович
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