Energy structure of heavy-fermion antiferromagnets in a magnetic field

Описание

Тип публикации: статья из журнала (материалы конференций, опубликованные в журналах)

Конференция: 2nd Euro-Asian Symposium on Trends in Magnetism (EASTMAG-2004); Krasnoyarsk State Univ, Krasnoyarsk, RUSSIA; Krasnoyarsk State Univ, Krasnoyarsk, RUSSIA

Год издания: 2005

Ключевые слова: Antiferromagnetic materials, Ground state, Magnetic fields, Magnetic moments, Mathematical models, Problem solving, Energy spectrum, Energy structure, Periodic Anderson model (PAM), Spin moments, Fermions

Аннотация: On the basis of the periodic Anderson model (PAM) with an antiferromagnetic (AFM) exchange interaction in the subsystem of localized spin moments, the problem of the energy spectrum of heavy-fermion antiferromagnets with a metallic-type ground state in the canted phase is considered. To simplify the determination of the self-consisПоказать полностьюtent set of equations, unitary transformations were used. It has been shown that the eighth-order dispersion equation can be represented as follows: Delta(k up arrow)((4))(omega)Delta(k down arrow)((4))(omega) = 0. The solutions to the equation describe eight-band spectrum of the heavy-fermion antiferromagnet in the canted phase when magnetic field is applied.

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Издание

Журнал: Physics of Metals and Metallography

Выпуск журнала: Vol. 99, Is. SUPPL.1

Номера страниц: 106-109

ISSN журнала: 0031918X

Место издания: Birmingham

Издатель: Interperiodica

Авторы

  • Val'Kov V.V. (Krasnoyarsk State Technical University; Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences; Krasnoyarsk State University)
  • Dzebisashvili D.M. (Krasnoyarsk State Technical University; Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences)

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