|
Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2010, Volume 92, Issue 8, Pages 596–599
(Mi jetpl1448)
|
|
|
|
This article is cited in 6 scientific papers (total in 6 papers)
CONDENSED MATTER
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
Abstract:
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.
Received: 16.09.2010
Citation:
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”, Pis'ma v Zh. Èksper. Teoret. Fiz., 92:8 (2010), 596–599; JETP Letters, 92:8 (2010), 543–546
Linking options:
https://www.mathnet.ru/eng/jetpl1448 https://www.mathnet.ru/eng/jetpl/v92/i8/p596
|
Statistics & downloads: |
Abstract page: | 204 | Full-text PDF : | 52 | References: | 36 |
|