Dependence of transverse magnetothermoelectric effects on inhomogeneous magnetic fields

被引：14
|
作者：
Shestakov, A. S. [1 ]
Schmid, M. [1 ]
Meier, D. [2 ]
Kuschel, T. [2 ]
Back, C. H. [1 ]
机构：
[1] Univ Regensburg, Inst Expt & Appl Phys, D-93040 Regensburg, Germany
[2] Univ Bielefeld, Dept Phys, Ctr Spinelect Mat & Devices, D-33615 Bielefeld, Germany
来源：
PHYSICAL REVIEW B | 2015年 / 92卷 / 22期
关键词：
SPIN; HALL;
D O I：
10.1103/PhysRevB.92.224425
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Transverse magnetothermoelectric effects are studied in permalloy thin films grown on MgO substrates. We find that small parasitic magnetic fields below 1 Oe can produce artifacts of the order of 1% of the amplitude of the anisotropic magnetothermopower which is also detected in the experiments. The measured artifacts reveal a new source of uncertainties for the detection of the transverse spin Seebeck effect in conductive ferromagnets. Taking these results into account we conclude that the contribution of the transverse spin Seebeck effect in our permalloy-Pt devices to the detected voltages is below the noise level of 20 nV.
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页数：8
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