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The bright and dark exciton coherent coupling enabled by the external magnetic fields.

ORAL

Abstract

Magnetic field and polarization-dependent measurements on monolayer WSe2 were performed using time-integrated four-wave mixing spectroscopy. Magnetic fields up to 25T were applied parallel to the monolayer plane, and the partial brightening of the dark excitonic state was observed as an increase in dephasing time. The polarization-dependent study shows the coherent quantum beating between the states when higher magnetic fields were applied. The results were then modeled using time-dependent density functional theory.

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Presenters

  • Varun Mapara

    University of South Florida

Authors

  • Varun Mapara

    University of South Florida

  • Authur Suits

    Princeton University, Aalto University, U.S. Naval Research Laboratory, Louisiana State University, University of South Florida, DBIO, Boston College, QCD Labs, Aalto University, DMP, Univeristy of Chicago, University of California, Berkeley, University of Delaware, University of Missouri

  • Authur Suits

    Princeton University, Aalto University, U.S. Naval Research Laboratory, Louisiana State University, University of South Florida, DBIO, Boston College, QCD Labs, Aalto University, DMP, Univeristy of Chicago, University of California, Berkeley, University of Delaware, University of Missouri

  • Christopher E Stevens

    University of South Florida, Air Force Research Laboratory, Sensors Directorate, Wright-Patterson Air Force Base, Ohio, 45433, USA

  • Fang Liu

    Stanford Univ

  • Xiaoyang Zhu

    Columbia University, Columbia Univ

  • Stephen McGrill

    National High Magnetic Field Labs, Florida, National High magnetic field Laboratory, National High Magnetic Field Laboratory, Tallahassee, Florida 32310, USA

  • Volodymyr Turkowski

    University of Central Florida

  • Denis Karaiskaj

    Univ of South Florida