Quantum dynamics of electrostatically confined exciton
ORAL
Abstract
The ferroelectric moiré domains in twisted hexagonal boron nitride(t-bBN) structures provide a versatile platform for electrostatically confining excitonic states. For instance, the in-plane electric field at domain walls creates a potential trap, enabling the quantum confinement of excitons. Here, we utilize two-dimensional coherent spectroscopy (2DCS) to investigate the quantum dynamics of excitons in transition metal dichalcogenide monolayer and bilayers adjacent to a t-hBN substrate. We observe two distinct resonances corresponding to localized and delocalized excitons, respectively. Using 2DCS, we directly measure the dephasing times of these excitons and demonstrate the coupling between them.
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Presenters
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Kai Hao
The University of Texas at Austin, University of Texas at Austin
Authors
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Kai Hao
The University of Texas at Austin, University of Texas at Austin
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Xiaohui Liu
University of Texas at Austin
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DONGSEOB KIM
The University of Texas at Austin, University of Texas at Austin
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Kyoungpyo Lee
University of Texas at Austin
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Xiaoqin Elaine Li
University of Texas at Austin