Topological structural defects and exotic magnetic behaviors in hexagonal TbInO3 and GdInO3

ORAL

Abstract

Geometrical frustration may induce highly degenerate ground states, complex spin configurations, or exotic ground states. One extreme example is the spin liquid, where magnetic ordering is suppressed even at zero temperature by quantum fluctuations. Spin liquids may host novel properties such as spinon excitations, majorana edge states, etc. Here, we report intriguing examples of coexisting topological ferroelectric domains and exotic magnetism in hexagonal rare-earth (R) indates such as TbInO3 and GdInO3. Geometric ferroelectricity is realized in hexagonal RInO3 and we have unveiled Z6 vortex domains associated with geometric ferroelectricity in TbInO3 and GdInO3, as similar to what has been observed in hexagonal manganites. On the other hand, magnetic properties vary upon different R ions. For example, GdInO3 shows a phase transition at low temperatures below 2.5 K whereas no signature of phase transition is observed for TbInO3. We suggest that the topological defects and ferroelectric domain walls serve as an intrinsic playground for the edge states that may exist in frustrated magnets.

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Presenters

  • Jae Wook Kim

    Rutgers University, New Brunswick, Physics and Astronomy, Rutgers University, Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University

Authors

  • Jae Wook Kim

    Rutgers University, New Brunswick, Physics and Astronomy, Rutgers University, Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University

  • Xueyuen Wang

    Department of Physics, Rutgers University, Rutgers University, New Brunswick

  • Fei-Ting Huang

    Department of Physics and Astronomy, Rutgers University, Rutgers University, New Brunswick, Department of Physics and Astronomy, Rutgers University, New Jersey

  • Yazhong Wang

    Rutgers University, New Brunswick

  • Y Li

    Rutgers University, New Brunswick, Sandia National Laboratories, Livermore, CA 94551

  • Sang-Wook Cheong

    Rutgers University, Department of Physics and Astronomy, Rutgers University, Rutgers University, New Brunswick, Rutgers Center for Emergent Materials and Department of Physics & Astronomy, Rutgers University, Center for Quantum Materials Synthesis and Department of Physics and Astronomy, Rutgers, the State University of New Jersey, Department of Physics, Rutgers University, Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, NJ, Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA, Physics, Rutgers University, Physics and Astronomy, Rutgers University, New Brunswick, Department of Physics and Astronomy, Rutgers University, New Jersey, Rutgers University, Physics and Astronomy, and Laboratory for Pohang Emergent Materials and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science, RCEM, Department of Physics and Astronomy, Rutgers U., Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Department of Physics and Astronomy, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, USA, Rutgers Center for Emergent Materials

  • Xuan Luo

    National Graphene Research and Development Center, Physics, National Graphene Research and Development Center, Pohang University of Science and Technology

  • Eundeok Mun

    Department of Physics, Simon Fraser University, Los Alamos National Laboratory

  • Xiaxin Ding

    Idaho National Laboratory, National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos National Laboratory

  • Vivien Zapf

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