High pressure and high magnetic field tuning of the S = 1 quantum antiferromagnet system

ORAL

Abstract

[Ni(HF2)(pyz)2]SbF6 is a quasi-one-dimensional S = 1 antiferromagnet in which the magnetic ground state can be tuned by changing the single-ion anisotropy (D) and the intrachain (J ) and interchain (J’) exchange interactions, allowing exploration of the Haldane phase diagram close to quantum criticality. With a newly developed pressure cell designed for pulsed magnetic fields of up to 100 T, we tune the above interactions in [Ni(HF2)(pyz)2]SbF6 using hydrostatic pressures of up to 5.4 GPa. The characteristic form of the magnetic susceptibility was measured in pulsed fields of up to 65 T using a Proximity Detector Oscillator (PDO), allowing values of D, J and J’ to be inferred at each pressure.

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Presenters

  • Dan Sun

    Los Alamos National Laboratory, National High Magnetic Field Lab, Los Alamos National Laboratory, Los Alamos, USA

Authors

  • Dan Sun

    Los Alamos National Laboratory, National High Magnetic Field Lab, Los Alamos National Laboratory, Los Alamos, USA

  • Sam Curley

    Physics, University of Warwick, Warwick University

  • Paul Goddard

    Physics, University of Warwick, Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom, Warwick University, Department of Physics, University of Warwick

  • Jacqueline Villa

    Eastern Washington University

  • Jamie Manson

    Chemistry, Eastern Washington University, Dept. of Chemistry and Biochemistry, Eastern Washington University, Eastern Washington University, Department of Chemistry and Biochemistry, Eastern Washington University

  • John Singleton

    National High Magnetic Field Laboratory, Los Alamos National Laboratory, MPA-MAG, Los Alamos National Laboratory, National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM 87545, Los Alamos National Laboratory, NHMFL, Los Alamos National Labs, NHMFL, Los Alamos National Laboratory, Los Alamos, National High Magnetic Field Laboratory, NHMFL, Los Alamos Natl Lab, Los Alamos Natl Lab

  • Fedor Balakirev

    Los Alamos National Laboratory, Los Alamos National Labs, Los Alamos, National High Magnetic Field Laboratory, National High Magnetic Field Lab, Los Alamos National Laboratory, Los Alamos, USA, National High Magnetic Field Laboratory