Spin-wave excitation in ultrathin Co and Fe films on Cu(001) by spin-polarized electron energy loss spectroscopy (invited)

被引：20

作者：

Vollmer, R

Etzkorn, M

Kumar, PSA

Ibach, H

Kirschner, J

机构：

[1] Max Planck Inst Mikrostrukturphys, D-06120 Halle An Der Saale, Germany

[2] Forschungszentrum Julich, Inst Schichten & Grenzflachen ISG3, D-52425 Julich, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 95卷 / 11期

关键词：

D O I：

10.1063/1.1689774

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate, that spin-polarized electron energy loss spectroscopy is a unique tool to determine spin-wave dispersion curves of ultrathin films and surfaces over the whole Brillouin zone. For ultrathin Co films on Cu(001) the excitation of a spin wave appears as a well defined peak in the loss spectrum. 3 ML Fe films on 1 ML Co/Cu(001) films show spin-wave excitation peaks as well though much broader compared to the Co case. The spin-wave energy at the surface zone boundary of about 140 meV for the Fe film is nearly a factor of 2 smaller than that of the Co films. (C) 2004 American Institute of Physics.

引用

页码：7435 / 7440

页数：6

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