NMR Studies of the Vanadium Phosphorous Oxide Single Crystal

ORAL

Abstract

Strongly correlated-electron system, vanadium phosphorous oxide (VxPOy), have shown a variety of crystal structures and distinct magnetic properties, depending on the different stoichiometric ratio x and y and the valence states on V sites. A recently synthesized member of the VxPOy family was observed to undergo two phase transitions, through transport, magnetic susceptibility and neutron scattering measurements. The low-temperature phase (T<130 K) is a canted antiferromagnet, while 13P NMR spectroscopy and relaxation in the intermediate phase (130 K<T<615 K) is consistent with paramagnetism. The transition at 615 K is of unknown origin, but may be associated with charge or orbital ordering in the system.

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Presenters

  • Chaowei Hu

    University of California, Los Angeles, Physics and Astronomy, Univ of California - Los Angeles

Authors

  • Chaowei Hu

    University of California, Los Angeles, Physics and Astronomy, Univ of California - Los Angeles

  • Hsin-Hua Wang

    Department of Physics and Astronomy, UCLA, Physics and Astronomy, Univ of California - Los Angeles, Department of Physics & Astronomy, Univ of California - Los Angeles

  • Yongkang Luo

    Department of Physics and Astronomy, UCLA, Physics and Astronomy, Univ of California - Los Angeles, Los Alamos Natl Lab, Los Alamos National Laboratory

  • Jie Xing

    Physics and Astronomy, Univ of California - Los Angeles, Department of Physics and Astronomy and California Nano Systems Institute, Univ of California - Los Angeles

  • Stuart Brown

    Department of Physics and Astronomy, UCLA, Physics and Astronomy, Univ of California - Los Angeles, Physics and Astronomy, University of California, Los Angeles, Department of Physics & Astronomy, Univ of California - Los Angeles, Physics and Astronomy, UCLA

  • Ni Ni

    Physics, University of California at Los Angeles, Physics and Astronomy, Univ of California - Los Angeles, Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles, Department of Physics and Astronomy , Univ of California - Los Angeles