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Письма в Журнал экспериментальной и теоретической физики, 2011, том 94, выпуск 8, страницы 672–677
(Mi jetpl2362)
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Эта публикация цитируется в 18 научных статьях (всего в 18 статьях)
КОНДЕНСИРОВАННОЕ СОСТОЯНИЕ
Carrier mediated ferromagnetism on the surface of a topological
insulator
V. N. Men'shova, V. V. Tugusheva, E. V. Chulkovb a Russian Research Centre "Kurchatov Institute", Moscow
b Departamento de Física de Materiales, Facultad de Quimica, UPV/EHU, San Sebastian, Basque Country
Аннотация:
We study the effect of magnetic doping at the surface of a three dimensional topological insulator
(TI) on emergence of ferromagnetic ordering at the TI-surface assuming the exchange coupling between the
Dirac fermions and the dilute magnetic ions. We show that this coupling results in an uniaxial magnetic
anisotropy with out-of-plane magnetization direction. It is found that the system under consideration is
unstable with respect to a spontaneous uniform magnetization along the easy axis, which is accompanied by
opening a gap in a spectrum of the Dirac surface states. In the framework of a mean-field approach, we study
the possibility of ferromagnetic order on the magnetically doped surface of TI at different temperatures and
positions of the chemical potential.
Поступила в редакцию: 06.09.2011
Образец цитирования:
V. N. Men'shov, V. V. Tugushev, E. V. Chulkov, “Carrier mediated ferromagnetism on the surface of a topological
insulator”, Письма в ЖЭТФ, 94:8 (2011), 672–677; JETP Letters, 94:8 (2011), 629–634
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl2362 https://www.mathnet.ru/rus/jetpl/v94/i8/p672
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Страница аннотации: | 262 | PDF полного текста: | 70 | Список литературы: | 33 |
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