Heat assisted spin torque switching of quasistable nanomagnets across a vacuum gap

被引：22

作者：

Herzog, G. ^{[1
]}

Krause, S.

Wiesendanger, R.

机构：

[1] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 10期

关键词：

FE(110); DRIVEN; W(110);

D O I：

10.1063/1.3354023

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Current-induced magnetization switching of thermally quasistable magnetic nanoislands is demonstrated using a spin-polarized scanning tunneling microscope. The magnetization of an individual Fe nanoisland consisting of about 40 atoms on a W(110) surface is reversibly switched between two quasistable states by the application of spin-polarized tunnel current pulses without an applied magnetic field. The pulse length is shown to be crucial for a high switching efficiency. Sweeping the tunnel current from the nanoampere to the microampere regime allows for the determination of critical switching currents. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3354023]

引用

页数：3

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