Current induced noise in CPP spin valves

被引：22

作者：

Zhu, JG ^{[1
]}

Kim, N

Zhou, YC

Zheng, YF

Chang, JW

Ju, KC

Zhu, XC

White, RM

机构：

[1] Carnegie Mellon Univ, Ctr Data Storage Syst, Pittsburgh, PA 15213 USA

[2] Carnegie Mellon Univ, Dept Elect & Comp Engn, Pittsburgh, PA 15213 USA

[3] Headway Technol Inc, Milpitas, CA 95035 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2004年 / 40卷 / 04期

关键词：

current perpendicular-to-plane (CPP) spin-valve; read heads; spin transfer; 1/f noise;

D O I：

10.1109/TMAG.2004.829257

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：

In this paper, an experimental investigation of current-induced noise in current perpendicular-to-plane spin-valve heads is reported. It is found that the sense current yields excitations of coherent spin waves as well as substantial 1/f-like noise when current exceeds a critical value. The noise is magnetic in nature. The criticality and current directional dependence of the noise excitation clear v show that the spin transfer is the cause.

引用

页码：2323 / 2325

页数：3

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