Memristive phase switching in two-dimensional 1T-TaS2 crystals

ORAL

Abstract

Among 2D materials with correlated electrons, 1T-TaS2 is one of the most attracting systems with charge density wave (CDW) phases [1]. In this presentation, we report an electrical switching between various non-volatile metastable electronic phases in 1T-TaS2 thin flakes. By applying a high lateral electric field, we realized multiple metastable states, where the system shows truly metallic behavior. The emergence of novel ground states, possibly stabilized by the slow kinetics due to the reduced dimensionality [2], reflects the electronic complexity in 2D materials with nanometer thickness. [1] M. Yoshida et al. Sci. Rep. 4, 7302 (2014); [2] M. Yoshida et al. Sci. Adv. 1, e1500606 (2015).

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Authors

  • Masaro Yoshida

    Department of Applied Physics, The University of Tokyo

  • Takashi Gokuden

    Department of Applied Physics, The University of Tokyo

  • Ryuji Suzuki

    Department of Applied Physics, The University of Tokyo, Quantum-Phase Electronics Center (QPEC) and Department of Applied Physics, The University of Tokyo

  • Yijin Zhang

    Department of Applied Physics, The University of Tokyo, Quantum-Phase Electronics Center (QPEC) and Department of Applied Physics, The University of Tokyo

  • Masaki Nakano

    Department of Applied Physics, The University of Tokyo

  • Yoshihiro Iwasa

    Department of Applied Physics, The University of Tokyo, The University of Tokyo AND RIKEN CEMS, Quantum-Phase Electronics Center (QPEC) and Department of Applied Physics, The University of Tokyo