Growth and characterization of Cd3As2 epitaxial thin films on a II-VI substrate

ORAL

Abstract

Cd3As2 is a representative system of the Dirac semimetal, characterized by an inverted band structure with a linear Dirac dispersion. A lot of quantum transport phenomena originating from the unique band structure have been reported so far. Among them, magnetotransport measurements on Cd3As2 thin films are highly limited, because there are many difficulties to fabricate thin films with high crystallinity and surface flatness. To challenge this problem, we have investigated the growth mechanisms of Cd3As2, especially during the initial process of the epitaxial growth. By optimizing the growth conditions, single-crystalline Cd3As2 films with step and terrace structures have been successfully synthesized in-situ on a II-VI substrate. Detailed transport properties of the low carrier density films will be also presented.

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Presenters

  • Yusuke Nakazawa

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

Authors

  • Yusuke Nakazawa

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

  • Masaki Uchida

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

  • Shinichi Nishihaya

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

  • Yusuke Kozuka

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

  • Masashi Kawasaki

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