Second Harmonic Detection of Spin-Dependent Transport in Magnetic Nanostructures

被引：1
|
作者：
Yu Hai-Ming [1 ,2 ]
Granville, S. [2 ]
Yu Da-Peng [1 ]
Ansermet, J-Ph [2 ]
机构：
[1] Peking Univ, State Key Lab Mesoscop Phys, Dept Phys, Beijing 100871, Peoples R China
[2] Ecole Polytech Fed Lausanne, IPMC, Stn 3, CH-1015 Lausanne, Switzerland
来源：
CHINESE PHYSICS LETTERS | 2010年 / 27卷 / 02期
关键词：
D O I：
10.1088/0256-307X/27/2/027201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Detection of the second harmonic response of magnetic nanostructures to an ac current is shown to be a very sensitive probe of the magnetization reversal process. A temperature oscillation is obtained by Joule heating instead of using a laser as the heat source, as in thermo-galvanic voltage measurements (TGV). Joule heating is used to produce a large local temperature gradient in asymmetric Co/Cu/Co spin valves. Evidence is found for an effect of a heat current on magnetization.
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页数：4
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