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arXiv · 1412.8289

Domain wall magneto-Seebeck effect

Patryk Krzysteczko·Xiukun Hu·Niklas Liebing·Sibylle Sievers·Hans W. Schumacher
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Abstract

The interplay between charge, spin, and heat currents in magnetic nano systems subjected to a temperature gradient has lead to a variety of novel effects and promising applications studied in the fast-growing field of spincaloritronics. Here we explore the magnetothermoelectrical properties of an individual magnetic domain wall in a permalloy nanowire. In thermal gradients of the order of few Kelvin per micrometer along the long wire axis, we find a clear magneto-Seebeck signature due to the presence of a single domain wall. The observed domain wall magneto-Seebeck effect can be explained by the magnetization-dependent Seebeck coefficient of permalloy in combination with the local spin configuration of the domain wall.

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Patryk Krzysteczko, Xiukun Hu, Niklas Liebing, Sibylle Sievers, Hans W. Schumacher. 2014-12-29. Domain wall magneto-Seebeck effect. https://doi.org/10.1103/physrevb.92.140405

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