Longitudinal Spin Seebeck Effect Free from the Proximity Nernst Effect

T. Kikkawa; K. Uchida; Y. Shiomi; Z. Qiu; D. Hou; D. Tian; H. Nakayama; X. -F. Jin; E. Saitoh

doi:10.1103/PhysRevLett.110.067207

Longitudinal Spin Seebeck Effect Free from the Proximity Nernst Effect

Materials Science 2013-02-25 v2 Mesoscale and Nanoscale Physics

Authors: T. Kikkawa , K. Uchida , Y. Shiomi , Z. Qiu , D. Hou , D. Tian , H. Nakayama , X. -F. Jin , E. Saitoh

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Abstract

This letter provides evidence for intrinsic longitudinal spin Seebeck effects (LSSEs) that are free from the anomalous Nernst effect (ANE) caused by an extrinsic proximity effect. We report the observation of LSSEs in Au/Y3Fe5O12 (YIG) and Pt/Cu/YIG systems, showing that LSSE appears even when the mechanism of the proximity ANE is clearly removed. In the conventional Pt/YIG structure, furthermore, we separate the LSSE from the ANE by comparing the voltages in different magnetization and temperature-gradient configurations; the ANE contamination was found to be negligibly small even in the Pt/YIG structure.

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@article{arxiv.1211.0139,
  title  = {Longitudinal Spin Seebeck Effect Free from the Proximity Nernst Effect},
  author = {T. Kikkawa and K. Uchida and Y. Shiomi and Z. Qiu and D. Hou and D. Tian and H. Nakayama and X. -F. Jin and E. Saitoh},
  journal= {arXiv preprint arXiv:1211.0139},
  year   = {2013}
}

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5 pages, 5 figures

Longitudinal Spin Seebeck Effect Free from the Proximity Nernst Effect

Abstract

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