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Experimental Test of the Spin Mixing Interface Conductivity Concept

Mathias Weiler, Matthias Althammer, Michael Schreier, Johannes Lotze, Matthias Pernpeintner, Sibylle Meyer, Hans Huebl, Rudolf Gross, Akashdeep Kamra, Jiang Xiao, Yan-Ting Chen, HuJun Jiao, Gerrit E. W. Bauer, and Sebastian T. B. Goennenwein
Phys. Rev. Lett. 111, 176601 – Published 23 October 2013
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Abstract

We perform a quantitative, comparative study of the spin pumping, spin Seebeck, and spin Hall magnetoresistance effects, all detected via the inverse spin Hall effect in a series of over 20yttrium   irongarnet/Pt samples. Our experimental results fully support present, exclusively spin current-based, theoretical models using a single set of plausible parameters for spin mixing conductance, spin Hall angle, and spin diffusion length. Our findings establish the purely spintronic nature of the aforementioned effects and provide a quantitative description, in particular, of the spin Seebeck effect.

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  • Received 20 June 2013

DOI:https://doi.org/10.1103/PhysRevLett.111.176601

© 2013 American Physical Society

Authors & Affiliations

Mathias Weiler1,*, Matthias Althammer1, Michael Schreier1, Johannes Lotze1, Matthias Pernpeintner1, Sibylle Meyer1, Hans Huebl1, Rudolf Gross1,2, Akashdeep Kamra3, Jiang Xiao4, Yan-Ting Chen3, HuJun Jiao3, Gerrit E. W. Bauer3,5, and Sebastian T. B. Goennenwein1,†

  • 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany
  • 2Physik-Department, Technische Universität München, 85748 Garching, Germany
  • 3Kavli Institute of Nanoscience, Delft University of Technology, 2628 CJ Delft, Netherlands
  • 4Department of Physics and State Key Laboratory of Surface Physics, Fudan University, Shanghai 200433, China
  • 5Institute of Materials Research and WPI-AIMR, Tohoku University, Sendai 980-8577, Japan

  • *Present address: National Institute of Standards and Technology, Boulder, CO, 80305, USA.
  • goennenwein@wmi.badw.de

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Issue

Vol. 111, Iss. 17 — 25 October 2013

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