Exciton transport phenomena in monolayer MoS$_{2}$

ORAL

Abstract

Monolayer transition metal dichalcogenides exhibit unique optical phenomena owing to the two-dimensional structure and valley degree of freedom. Many researchers have revealed that excitonic states play an important role in optical response, and have observed the diffusion transport of excitons in this system at room temperature [1, 2]. Here we report exciton transport phenomena in monolayer MoS$_{2}$ at low temperature through photoluminescence mapping. Our results can provide us a new platform for exciton-based optoelectronics with valley degrees of freedom. [1] S. Mouri et. al., PRB 90, 155449 (2014). [2] Q. Cui et. al., ACS nano 8, 2970 (2014).

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Authors

  • Masaru Onga

    Dept. of Appl. Phys., Univ. of Tokyo, Quantum-Phase Electronics center (QPEC) and Department of Applied Physics, The University of Tokyo

  • Yijin Zhang

    Max-Planck-Institut für Festkörperforschung

  • Toshiya Ideue

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

  • Yoshihiro Iwasa

    The University of Tokyo and RIKEN Center for Emergent Matter Science, Department of Applied Physics, the University of Tokyo, The University of Tokyo, RIKEN, Dept. of Appl. Phys., Univ. of Tokyo, RIKEN CEMS, Quantum-Phase Electronics center (QPEC) and Department of Applied Physics, The University of Tokyo