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

Nagarjuna Asam, Taisei Ariki, Takashi Kimura

研究成果: ジャーナルへの寄稿記事

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.

元の言語英語
記事番号113738
ジャーナルPhysica E: Low-Dimensional Systems and Nanostructures
117
DOI
出版物ステータス出版済み - 3 2020

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Thermoelectricity
probes
injection
Joule heating
Hall effect
Electric potential
electric potential
heat transmission
Heat transfer
harmonics
Hot Temperature
configurations

All Science Journal Classification (ASJC) codes

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

これを引用

Asymmetric nonlocal signal induced by thermoelectric effects in a lateral spin valve. / Asam, Nagarjuna; Ariki, Taisei; Kimura, Takashi.

:: Physica E: Low-Dimensional Systems and Nanostructures, 巻 117, 113738, 03.2020.

研究成果: ジャーナルへの寄稿記事

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