Effect of Wavy Spin-Transfer Torque on Ultrafast Unipolar Switching of a Nanomagnet With Out-of-Plane Polarizer

被引：3

作者：

Lee, Seo-Won ^{[1
]}

Lee, Kyung-Jin ^{[1
]}

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136713, South Korea

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2011年 / 47卷 / 10期

关键词：

Spin-transfer torque (STT); ultrafast switching; wavy spin-transfer torque; MAGNETIZATION REVERSAL; VOLTAGE-DEPENDENCE; PHASE-LOCKING; DRIVEN; DYNAMICS; NANOPILLARS; EMISSION;

D O I：

10.1109/TMAG.2011.2158399

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report that current-induced ultrafast unipolar switching can be realized by utilizing wavy spin-transfer torque (STT) and out-of-plane polarizer. Two spin-valve structures with normal STT and wavy STT are studied to investigate the effect of wavy STT on ultrafast precessional switching. We find that for the structure with normal STT, only antiparallel (AP)-to-parallel (P) switching occurs in one polarity of current whereas for the structure with wavy STT, both P-to-AP and AP-to-P switchings occur, showing alternative switching patterns as a function of current and pulse width.

引用

页码：3872 / 3875

页数：4

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