Pressure induced magnetic order in the novel 1D magnet K<sub>2</sub>Cr<sub>8</sub>O<sub>16</sub>

ORAL

Abstract

The title compound, K2Cr8O16, belongs to a series of quasi-1D compounds synthesised using a high- pressure/-temperature technique. The channels are formed by zig-zag Cr2O4 chains parallel to the c-axis and K cations occupying the center. Intriguingly, the compound undergoes a metal to insulator transition while maintaining the ferromagnetic order [1, 2], established by a Peierls transition [3]. Pressure dependent studies on this compound is fairly limited and the complete phase diagram of this compound is not fully resolved, especially the low temperature / high pressure region [4]. Here, pressure dependent muon spin rotation/relaxation (μSR) data is presented, which uniquely allow us perform measurements in zero applied field and hereby access the true intrinsic material properties. Finally, neutron diffraction has recently been conducted in order to elucidate the detailed nature of the complex phase diagram.

[1] K. Hasegawa, et al. PRL 103, 146403 (2009)
[2] J. Sugiyama, et al. PRB 85, 214407 (2012)
[3] T. Toriyama, et al. PRL 107, 266402 (2011)
[4] O. K. Forslund, et al. JPS Conf. Proc. 21, 011006 (2018)

*This research was supported by Marie SkIodowska Curie Action and Swedish Research Council (VR), Grant No. INCA- 2014-6426.

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Presenters

  • Ola Kenji Forslund

    • Materials and Nano Physics, KTH Royal Institut of Technology
    • Royal Institute of Technology
    • Applied Physics, KTH Royal Institute of Technology

Authors

  • Ola Kenji Forslund

    • Materials and Nano Physics, KTH Royal Institut of Technology
    • Royal Institute of Technology
    • Applied Physics, KTH Royal Institute of Technology

  • Elisabetta Nocerino

    • Royal Institute of Technology
    • Applied Physics, KTH Royal Institute of Technology

  • Daniel Andreica

    • Babes-Bolyai University
    • Physics, Babes-Bolyai University

  • Yasmine Sassa

    • Department of Physics and Astronomy, Uppsala University
    • Uppsala University
    • Physics and Astronomy, Uppsala University

  • Hiroshi Nozaki

    • Toyota Central Research and Development Laboratories Inc.
    • Toyota Central research and Development Lab

  • Izumi Umegaki

    • Toyota Central Research and Development Laboratories Inc.
    • Toyota Central research and Development Lab

  • Viktor Jonsson

    • Royal Institute of Technology

  • Zurab Guguchia

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Paul Scherrer Institut
    • Princeton University
    • Columbia University
    • Brookhaven National Laboratory

  • Zurab Shermadini

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Paul Scherrer Institut

  • Rustem Khasanov

    • Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute
    • Paul Scherrer Institut
    • Paul Scherrer Institute
    • Paul Sherrer Institut
    • PSI, 5232 Villigen, Switzerland

  • Masahiko Isobe

    • Max Planck Institute for Solid State Research

  • Yutaka Ueda

    • oyota Physical and Chemical Research Institute

  • Jun Sugiyama

    • Toyota Central Research and Development Laboratories Inc.
    • Toyota Central research and Development Lab

  • Martin Månsson

    • Materials and Nano Physics, KTH Royal Institut of Technology
    • Royal Institute of Technology
    • KTH Royal Institute of Technology
    • Applied Physics, KTH Royal Institute of Technology

  • Hidenori Takagi

    • Department of Advanced Materials, University of Tokyo
    • Max Planck Institute for Solid State Research
    • Physics, University of Tokyo
    • University of Tokyo (Japan)