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Письма в Журнал экспериментальной и теоретической физики, 2002, том 76, выпуск 8, страницы 614–618
(Mi jetpl2965)
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Эта публикация цитируется в 18 научных статьях (всего в 18 статьях)
МЕТОДЫ ТЕОРЕТИЧЕСКОЙ ФИЗИКИ
Transition from non Fermi liquid behavior to Landau Fermi liquid behavior induced by magnetic fields
Yu. G. Pogorelova, V. R. Shaginyanb a Departamento de Física, Universidade do Porto
b B. P. Konstantinov Petersburg Nuclear Physics Institute, Russian Academy of Sciences
Аннотация:
We show that a strongly correlated Fermi system with the fermion condensate, which exhibits strong deviations from Landau Fermi liquid behavior, is driven into the Landau Fermi liquid by applying a small magnetic field $B$ at temperature $T=0$. This field-induced Landau Fermi liquid behavior provides the constancy of the Kadowaki-Woods ratio. A re-entrance into the strongly correlated regime is observed if the magnetic field $B$ decreases to zero, then the effective mass $M^*$ diverges as $M^*\propto 1/\sqrt{B}$. At finite temperatures, the strongly correlated regime is restored at some temperature $T^*\propto\sqrt{B}$. This behavior is of general form and takes place in both three dimensional and two dimensional strongly correlated systems. We demonstrate that the observed $1/\sqrt{B}$ divergence of the effective mass and other specific features of heavy-fermion metals are accounted for by our consideration.
Поступила в редакцию: 23.09.2002
Образец цитирования:
Yu. G. Pogorelov, V. R. Shaginyan, “Transition from non Fermi liquid behavior to Landau Fermi liquid behavior induced by magnetic fields”, Письма в ЖЭТФ, 76:8 (2002), 614–618; JETP Letters, 76:8 (2002), 532–536
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl2965 https://www.mathnet.ru/rus/jetpl/v76/i8/p614
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Страница аннотации: | 148 | PDF полного текста: | 59 | Список литературы: | 30 |
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