Electrical control of magnon propagation in multiferroic BiFeO3 films

被引：44

作者：

de Sousa, Rogerio ^{[1
]}

Moore, Joel E. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 02期

基金：

美国国家科学基金会;

关键词：

Bismuth - Magnetostatics - Spin waves - Wave propagation;

D O I：

10.1063/1.2835704

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The spin wave spectra of multiferroic BiFeO(3) films is calculated using a phenomenological Landau theory that includes magnetostatic effects. The lowest frequency magnon dispersion is shown to be quite sensitive to the angle between spin wave propagation vector and the Neel moment. Since electrical switching of the Neel moment has recently been demonstrated in this material, the sensitivity of the magnon dispersion permits direct electrical switching of spin wave propagation. This effect can be used to construct spin wave logical gates without current pulses, potentially allowing reduced power dissipation per logical operation. (c) 2008 American Institute of Physics.

引用

页数：3

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