Inelastic Scattering of Slow Electrons from a Heisenfoerg Ferromagnet

The magnetic inelastic scattering of low‐energy electrons by the (001) surface of a b.c.c. Heisenberg ferromagnet is considered. As a first step, the spectrum of elementary magnetic excitations is obtained, revealing the existence of optical and acoustic surface magnons, as well as a continuum of bu...

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Detalles Bibliográficos
Publicado: 1974
Materias:
MAGNETIC MATERIALS - Ferromagnetism
MAGNETISM
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03701972_v66_n1_p377_Harriague
http://hdl.handle.net/20.500.12110/paper_03701972_v66_n1_p377_Harriague
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_03701972_v66_n1_p377_Harriague
record_format dspace
spelling paper:paper_03701972_v66_n1_p377_Harriague2023-06-08T15:36:27Z Inelastic Scattering of Slow Electrons from a Heisenfoerg Ferromagnet MAGNETIC MATERIALS - Ferromagnetism MAGNETISM The magnetic inelastic scattering of low‐energy electrons by the (001) surface of a b.c.c. Heisenberg ferromagnet is considered. As a first step, the spectrum of elementary magnetic excitations is obtained, revealing the existence of optical and acoustic surface magnons, as well as a continuum of bulk magnons. The differential cross‐section for inelastic scattering shows the contribution of those types of excitations; localized niagnons give a delta function contribution, while the contribution due to the bulk states is qualitatively different depending on the value of the ratio of the exchange integrals for surface and bulk spins, thereby providing a method for investigating the exchange interactions at the surface. Copyright © 1974 WILEY‐VCH Verlag GmbH & Co. KGaA 1974 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03701972_v66_n1_p377_Harriague http://hdl.handle.net/20.500.12110/paper_03701972_v66_n1_p377_Harriague
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic MAGNETIC MATERIALS - Ferromagnetism
MAGNETISM
spellingShingle MAGNETIC MATERIALS - Ferromagnetism
MAGNETISM
Inelastic Scattering of Slow Electrons from a Heisenfoerg Ferromagnet
topic_facet MAGNETIC MATERIALS - Ferromagnetism
MAGNETISM
description The magnetic inelastic scattering of low‐energy electrons by the (001) surface of a b.c.c. Heisenberg ferromagnet is considered. As a first step, the spectrum of elementary magnetic excitations is obtained, revealing the existence of optical and acoustic surface magnons, as well as a continuum of bulk magnons. The differential cross‐section for inelastic scattering shows the contribution of those types of excitations; localized niagnons give a delta function contribution, while the contribution due to the bulk states is qualitatively different depending on the value of the ratio of the exchange integrals for surface and bulk spins, thereby providing a method for investigating the exchange interactions at the surface. Copyright © 1974 WILEY‐VCH Verlag GmbH & Co. KGaA
title Inelastic Scattering of Slow Electrons from a Heisenfoerg Ferromagnet
title_short Inelastic Scattering of Slow Electrons from a Heisenfoerg Ferromagnet
title_full Inelastic Scattering of Slow Electrons from a Heisenfoerg Ferromagnet
title_fullStr Inelastic Scattering of Slow Electrons from a Heisenfoerg Ferromagnet
title_full_unstemmed Inelastic Scattering of Slow Electrons from a Heisenfoerg Ferromagnet
title_sort inelastic scattering of slow electrons from a heisenfoerg ferromagnet
publishDate 1974
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03701972_v66_n1_p377_Harriague
http://hdl.handle.net/20.500.12110/paper_03701972_v66_n1_p377_Harriague
_version_ 1768542316166905856

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