Characterization of GaTa<sub>4</sub>Se<sub>8</sub> single crystal with Jeff=3/2 ground state magnetic molecular

POSTER

Abstract

The geometrical spin frustration in the tetramer of lacunar spinel is a good subject for exploring the quantum spin liquid. In tantalum lacunar spinel, GaTa4Se8, there are molecular Jeff = 3/2 ground state and curious non-magnetic state with Jahn-Teller distortion [1]. Recently, we successfully grown the high quality of GaTa4Se8 single crystal, and studied by characterization of physical properties and inelastic neutron scattering. Temperature dependence of those characterization shows the difference between structure transition with orbital ordering, and indicates that gapped excitation already exists at higher temperature than orbital ordering temperature TS ~53 K.

[1] M Jeong et al., Nature comms., 8, 782 (2018)

*This work was supported by the National Research Foundation of Korea(NRF) funded by the Ministry of Science and ICT(No. 2016K1A4A4A01922028)

Presenters

  • Seunghwan Do

    • Oak Ridge National Lab
    • Materials Science and Technology Division, Oak Ridge National Lab
    • Oak Ridge National Laboratory
    • Materials Science and Technology Division, OakRidge National Laboratory

Authors

  • Choongjae Won

    • Pohang University of Science and Technology
    • Center for Complex Phase Materials, Max Planck POSTECH/Korea Research Initiative

  • Seunghwan Do

    • Oak Ridge National Lab
    • Materials Science and Technology Division, Oak Ridge National Lab
    • Oak Ridge National Laboratory
    • Materials Science and Technology Division, OakRidge National Laboratory

  • Jae-you Kim

    • Pohang University of Science and Technology

  • Jae-Hoon Park

    • Pohang Univ of Sci & Tech
    • Pohang University of Science and Technology

  • Sang-Wook Cheong

    • Rutgers University
    • R-CEM & Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
    • Rutgers Center for Emergent Materials, Rutgers University
    • Department of Physics and Astronomy, Center for Emergent Materials, Rutgers University; Max Planck POSTECH/Korea Research Initiative, Pohang University of Science and Technol
    • Physics and Astronomy, Rutgers University
    • Rutgers University, Physics and Astronomy, and Laboratory for Pohang Emergent Materials and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
    • Rutgers University, Piscataway
    • Department of Physics and Astronomy, Rutgers University, New Brunswick
    • Department of Physics and Astronomy, Rutgers University
    • Department of Physics, Rutgers University
    • Physics & Astronomy, Rutgers University
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University
    • Rutgers University, New Brunswick
    • Physics, Rutgers University
    • Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA