Asymmetric nonlocal signal induced by thermoelectric effects in a lateral spin valve

Nagarjuna Asam, Taisei Ariki, Takashi Kimura

研究成果: Contribution to journalArticle査読

抄録

We demonstrate that the heat flow arising from the Joule heating produces not only the conventional thermal spin injection but also additional thermo-electric effects both in current and voltage probes. The excellent thermal spin injection property for the CoFeAl enables us to distinguish the ordinal thermal spin valve signal and the unconventional asymmetric field dependence in the nonlocal 2nd harmonic signal. We show that the observed unique field dependence can be well explained by the anomalous Nenrst effect in the ferromagnetic voltage probe and the anomalous thermal Hall effect in the ferromagnetic current probe. The validity of the proposed mechanism was confirmed in various devices with different probe configurations.

本文言語英語
論文番号113738
ジャーナルPhysica E: Low-Dimensional Systems and Nanostructures
117
DOI
出版ステータス出版済み - 3 2020

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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