Quantitative separation of the anisotropic magnetothermopower and planar Nernst effect by the rotation of an in-plane thermal gradient
| Autor: | Reimer, Oliver, Meier, Daniel, Bovender, Michel, Helmich, Lars, Dreessen, Jan-Oliver, Krieft, Jan, Shestakov, Anatoly S., Back, Christian H., Schmalhorst, Jan-Michael, Hütten, Andreas, Reiss, Günter, Kuschel, Timo |
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| Přispěvatelé: | Physics of Nanodevices |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Scientific Reports Scientific Reports, 7:40586. Nature Publishing Group |
| ISSN: | 2045-2322 |
| Popis: | 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 and reveal a phase shift, that allows the quantitative separation of the thermopower, the anisotropic magnetothermopower and the planar Nernst effect. Comment: Main Manuscript: 9 pages, 9 figures; Supplementary Informations: 9 pages, 8 figures |
| Databáze: | OpenAIRE |
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