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

Nagarjuna Asam, Taisei Ariki, Takashi Kimura

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number113738
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Publication statusPublished - Mar 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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