Reimer, Oliver and Meier, Daniel and Bovender, Michel and Helmich, Lars and Dreessen, Jan-Oliver and Krieft, Jan and Shestakov, Anatoly S. and Back, Christian H. and Schmalhorst, Jan-Michael and Huetten, Andreas and Reiss, Guenter and Kuschel, Timo (2017) Quantitative separation of the anisotropic magnetothermopower and planar Nernst effect by the rotation of an in-plane thermal gradient. SCIENTIFIC REPORTS, 7: 40586. ISSN 2045-2322,
Full text not available from this repository. (Request a copy)Abstract
A thermal gradient as the driving force for spin currents plays a key role in spin caloritronics. In this field the spin Seebeck effect (SSE) is of major interest and was investigated in terms of in-plane thermal gradients inducing perpendicular spin currents (transverse SSE) and out-of-plane thermal gradients generating parallel spin currents (longitudinal SSE). Up to now all spincaloric experiments employ a spatially fixed thermal gradient. Thus, anisotropic measurements with respect to well defined crystallographic directions were not possible. Here we introduce a new experiment that allows not only the in-plane rotation of the external magnetic field, but also the rotation of an in-plane thermal gradient controlled by optical temperature detection. As a consequence, the anisotropic magnetothermopower and the planar Nernst effect in a permalloy thin film can be measured simultaneously. Thus, the angular dependence of the magnetothermopower with respect to the magnetization direction reveals a phase shift, that allows the quantitative separation of the thermopower, the anisotropic magnetothermopower and the planar Nernst effect.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MAGNETIZATION REVERSAL; SPIN CALORITRONICS; PERMALLOY-FILMS; THIN-FILMS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:01 |
| Last Modified: | 25 Feb 2019 11:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/552 |
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