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Письма в Журнал экспериментальной и теоретической физики, 2010, том 92, выпуск 8, страницы 596–599
(Mi jetpl1448)
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Эта публикация цитируется в 6 научных статьях (всего в 6 статьях)
КОНДЕНСИРОВАННЫЕ СРЕДЫ
Validity of Anderson and Hubbard model for the description of Ce metal and cerium heavy fermion compounds
S. V. Streltsovab, A. O. Shorikovab, V. I. Anisimovab a Ural Federal University, Ekaterinburg, Russia
b Institute of Metal Physics, Russian Academy of Sciences, Yekaterinburg, Russia
Аннотация:
The importance of taking into account inter-site $f-f$ hybridization in electron structure calculations for Ce metal and cerium heavy fermion compounds was studied. We demonstrate that for heavy-fermion systems such as cerium compound CeCu$_2$Si$_2$ $f-f$ hybridization can be neglected and Anderson model application is well justified. On another hand for cerium metal $f-f$ hybridization is strong enough to provide the contribution to hybridization function comparable to hybridization between $4f$ and itinerant electrons. We argue that in the case of Ce only the most general Hamiltonian combining Hubbard and Anderson models should be used.
Поступила в редакцию: 16.09.2010
Образец цитирования:
S. V. Streltsov, A. O. Shorikov, V. I. Anisimov, “Validity of Anderson and Hubbard model for the description of Ce metal and cerium heavy fermion compounds”, Письма в ЖЭТФ, 92:8 (2010), 596–599; JETP Letters, 92:8 (2010), 543–546
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl1448 https://www.mathnet.ru/rus/jetpl/v92/i8/p596
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Страница аннотации: | 204 | PDF полного текста: | 52 | Список литературы: | 36 |
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