IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v7y2016i1d10.1038_ncomms10452.html
   My bibliography  Save this article

Origin of the spin Seebeck effect in compensated ferrimagnets

Author

Listed:
  • Stephan Geprägs

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

  • Andreas Kehlberger

    (Institute of Physics, Johannes Gutenberg-University Mainz
    Materials Science in Mainz)

  • Francesco Della Coletta

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

  • Zhiyong Qiu

    (WPI Advanced Institute for Materials Research, Tohoku University
    ERATO, Japan Science and Technology Agency)

  • Er-Jia Guo

    (Institute of Physics, Johannes Gutenberg-University Mainz)

  • Tomek Schulz

    (Institute of Physics, Johannes Gutenberg-University Mainz)

  • Christian Mix

    (Institute of Physics, Johannes Gutenberg-University Mainz
    Materials Science in Mainz)

  • Sibylle Meyer

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

  • Akashdeep Kamra

    (Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften
    Kavli Institute of NanoScience, Delft University of Technology
    Present address: Fachbereich Physik, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.)

  • Matthias Althammer

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

  • Hans Huebl

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

  • Gerhard Jakob

    (Institute of Physics, Johannes Gutenberg-University Mainz
    Materials Science in Mainz)

  • Yuichi Ohnuma

    (Institute for Materials Research, Tohoku University
    Advanced Science Research Center, Japan Atomic Energy Agency)

  • Hiroto Adachi

    (ERATO, Japan Science and Technology Agency
    Advanced Science Research Center, Japan Atomic Energy Agency)

  • Joseph Barker

    (Institute for Materials Research, Tohoku University)

  • Sadamichi Maekawa

    (ERATO, Japan Science and Technology Agency
    Advanced Science Research Center, Japan Atomic Energy Agency)

  • Gerrit E. W. Bauer

    (WPI Advanced Institute for Materials Research, Tohoku University
    Kavli Institute of NanoScience, Delft University of Technology
    Institute for Materials Research, Tohoku University)

  • Eiji Saitoh

    (WPI Advanced Institute for Materials Research, Tohoku University
    Institute for Materials Research, Tohoku University
    Advanced Science Research Center, Japan Atomic Energy Agency
    CREST, Japan Science and Technology Agency)

  • Rudolf Gross

    (Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften
    Technische Universität München
    Nanosystems Initiative Munich (NIM))

  • Sebastian T. B. Goennenwein

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

  • Mathias Kläui

    (Institute of Physics, Johannes Gutenberg-University Mainz
    Materials Science in Mainz)

Abstract

Magnons are the elementary excitations of a magnetically ordered system. In ferromagnets, only a single band of low-energy magnons needs to be considered, but in ferrimagnets the situation is more complex owing to different magnetic sublattices involved. In this case, low lying optical modes exist that can affect the dynamical response. Here we show that the spin Seebeck effect (SSE) is sensitive to the complexities of the magnon spectrum. The SSE is caused by thermally excited spin dynamics that are converted to a voltage by the inverse spin Hall effect at the interface to a heavy metal contact. By investigating the temperature dependence of the SSE in the ferrimagnet gadolinium iron garnet, with a magnetic compensation point near room temperature, we demonstrate that higher-energy exchange magnons play a key role in the SSE.

Suggested Citation

  • Stephan Geprägs & Andreas Kehlberger & Francesco Della Coletta & Zhiyong Qiu & Er-Jia Guo & Tomek Schulz & Christian Mix & Sibylle Meyer & Akashdeep Kamra & Matthias Althammer & Hans Huebl & Gerhard J, 2016. "Origin of the spin Seebeck effect in compensated ferrimagnets," Nature Communications, Nature, vol. 7(1), pages 1-6, April.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10452
    DOI: 10.1038/ncomms10452
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms10452
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms10452?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10452. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.