Electric Field Induced Magnetic Anisotropy in a Ferromagnet

被引：60

作者：

Gamble, S. J. ^{[1
,2
]}

Burkhardt, Mark H. ^{[2
,6
]}

Kashuba, A. ^{[3
]}

Allenspach, Rolf ^{[4
]}

Parkin, Stuart S. P. ^{[5
]}

Siegmann, H. C. ^{[1
]}

Stoehr, J. ^{[1
,6
]}

机构：

[1] Stanford Univ, PULSE Ctr, Stanford, CA 94025 USA

[2] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[3] Bogolyubov Inst Theoret Phys 14B, UA-03680 Kiev, Ukraine

[4] IBM Res, Zurich Res Lab, CH-8803 Ruschlikon, Switzerland

[5] IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA

[6] Stanford Synchrotron Radiat Lightsource, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.102.217201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first observation of a transient all electric field induced magnetic anisotropy in a thin film metallic ferromagnet. We generate the anisotropy with a strong (similar to 10(9) V/m) and short (70 fs) E-field pulse. This field is large enough to distort the valence charge distribution in the metal, yet its duration is too brief to change the atomic positions. This pure electronic structure alteration of the sample generates a new type of transient anisotropy axis and strongly influences the magnetization dynamics. The successful creation of such an anisotropy opens the possibility for all E-field induced magnetization reversal in thin metallic films-a greatly desired yet unachieved process.

引用

页数：4

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