Laser-induced transient magnons in Sr <sub>3</sub> Ir <sub>2</sub> O <sub>7</sub> throughout the Brillouin zone

DOI Web Site Web Site 3 Citations 39 References
  • Daniel G. Mazzone
    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973;
  • Derek Meyers
    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973;
  • Yue Cao
    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973;
  • James G. Vale
    London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom;
  • Cameron D. Dashwood
    London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom;
  • Youguo Shi
    Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
  • Andrew J. A. James
    School of Physical Sciences, The Open University, Milton Keynes MK7 6AA, United Kingdom;
  • Neil J. Robinson
    Institute for Theoretical Physics, University of Amsterdam, 1098 XH Amsterdam, The Netherlands;
  • Jiaqi Lin
    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973;
  • Vivek Thampy
    Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025;
  • Yoshikazu Tanaka
    RIKEN SPring-8 Center, Sayo 679-5148, Japan;
  • Allan S. Johnson
    ICFO – The Institute of Photonics Sciences, The Barcelona Institute of Science and Technology, 08860, Castelldefels, Barcelona, Spain;
  • Hu Miao
    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973;
  • Ruitang Wang
    School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China;
  • Tadesse A. Assefa
    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973;
  • Jungho Kim
    Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439;
  • Diego Casa
    Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439;
  • Roman Mankowsky
    Max Planck Institute for the Structure and Dynamics of Matter, D-22761 Hamburg, Germany;
  • Diling Zhu
    Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025;
  • Roberto Alonso-Mori
    Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025;
  • Sanghoon Song
    Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025;
  • Hasan Yavas
    Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025;
  • Tetsuo Katayama
    RIKEN SPring-8 Center, Sayo 679-5148, Japan;
  • Makina Yabashi
    RIKEN SPring-8 Center, Sayo 679-5148, Japan;
  • Yuya Kubota
    RIKEN SPring-8 Center, Sayo 679-5148, Japan;
  • Shigeki Owada
    RIKEN SPring-8 Center, Sayo 679-5148, Japan;
  • Jian Liu
    Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996;
  • Junji Yang
    Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996;
  • Robert M. Konik
    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973;
  • Ian K. Robinson
    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973;
  • John P. Hill
    National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973;
  • Desmond F. McMorrow
    London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom;
  • Michael Först
    Max Planck Institute for the Structure and Dynamics of Matter, D-22761 Hamburg, Germany;
  • Simon Wall
    ICFO – The Institute of Photonics Sciences, The Barcelona Institute of Science and Technology, 08860, Castelldefels, Barcelona, Spain;
  • Xuerong Liu
    School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China;
  • Mark P. M. Dean
    Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973;

Abstract

<jats:title>Significance</jats:title> <jats:p> Ultrafast manipulation of magnetic states holds great promise for progress in our understanding of new quantum states and technical applications, but our current knowledge of transient magnetism is very limited. Our work elucidates the nature of transient magnetism in gapped antiferromagnets using <jats:inline-formula> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">S</mml:mi> <mml:mi mathvariant="normal">r</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>3</mml:mn> </mml:mrow> </mml:msub> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">I</mml:mi> <mml:mi mathvariant="normal">r</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">O</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>7</mml:mn> </mml:mrow> </mml:msub> </mml:math> </jats:inline-formula> as a model material. We find that transient magnetic fluctuations are trapped throughout the entire Brillouin zone while remaining present beyond the time that is required to restore the original spin network. The results are interpreted in the context of a spin-bottleneck effect, in which the existence of an explicit magnetic decay channel allows for an efficient thermalization of transient spin waves. </jats:p>

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