Magnetic behavior of thin rare-earth films
We consider a thin rare-earth film with the c axis perpendicular to the surface, to study its nonuniform magnetic structure induced by the lower coordination near the surfaces. The influence of a dc magnetic field, applied perpendicular to the c axis, on the equilibrium configurations is also inve...
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Principais autores: | , , |
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Formato: | article |
Idioma: | English |
Publicado em: |
American Physical Society
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Assuntos: | |
Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/28853 https://doi.org/10.1103/PhysRevB.59.6979 |
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Resumo: | We consider a thin rare-earth film with the c axis perpendicular to the surface, to study its nonuniform
magnetic structure induced by the lower coordination near the surfaces. The influence of a dc magnetic field,
applied perpendicular to the c axis, on the equilibrium configurations is also investigated. The spin-wave
frequencies, in the q=0 limit, are calculated as a function of the strength of the external dc field. We use the
bulk parameters of dysprosium and holmium to obtain the external field dependence of the equilibrium con-
figuration, magnetization, and the lowest spin-wave modes of 30-monolayer-thick films. |
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