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Longitudinal spin Seebeck effect contribution in transverse spin Seebeck effect experiments in Pt/YIG and Pt/NFO

Author

Listed:
  • Daniel Meier

    (Center for Spinelectronic Materials and Devices, Bielefeld University)

  • Daniel Reinhardt

    (Center for Spinelectronic Materials and Devices, Bielefeld University)

  • Michael van Straaten

    (Center for Spinelectronic Materials and Devices, Bielefeld University)

  • Christoph Klewe

    (Center for Spinelectronic Materials and Devices, Bielefeld University)

  • Matthias Althammer

    (Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften)

  • Michael Schreier

    (Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften
    Technische Universität München)

  • Sebastian T. B. Goennenwein

    (Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften
    Nanosystems Initiative Munich (NIM))

  • Arunava Gupta

    (Center for Materials for Information Technology, University of Alabama)

  • Maximilian Schmid

    (Institute of Experimental and Applied Physics, University of Regensburg)

  • Christian H. Back

    (Institute of Experimental and Applied Physics, University of Regensburg)

  • Jan-Michael Schmalhorst

    (Center for Spinelectronic Materials and Devices, Bielefeld University)

  • Timo Kuschel

    (Center for Spinelectronic Materials and Devices, Bielefeld University)

  • Günter Reiss

    (Center for Spinelectronic Materials and Devices, Bielefeld University)

Abstract

The spin Seebeck effect, the generation of a spin current by a temperature gradient, has attracted great attention, but the interplay over a millimetre range along a thin ferromagnetic film as well as unintended side effects which hinder an unambiguous detection have evoked controversial discussions. Here, we investigate the inverse spin Hall voltage of a 10 nm thin Pt strip deposited on the magnetic insulators Y3Fe5O12 and NiFe2O4 with a temperature gradient in the film plane. We show characteristics typical of the spin Seebeck effect, although we do not observe the most striking features of the transverse spin Seebeck effect. Instead, we attribute the observed voltages to the longitudinal spin Seebeck effect generated by a contact tip induced parasitic out-of-plane temperature gradient, which depends on material, diameter and temperature of the tip.

Suggested Citation

  • Daniel Meier & Daniel Reinhardt & Michael van Straaten & Christoph Klewe & Matthias Althammer & Michael Schreier & Sebastian T. B. Goennenwein & Arunava Gupta & Maximilian Schmid & Christian H. Back &, 2015. "Longitudinal spin Seebeck effect contribution in transverse spin Seebeck effect experiments in Pt/YIG and Pt/NFO," Nature Communications, Nature, vol. 6(1), pages 1-7, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9211
    DOI: 10.1038/ncomms9211
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