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You Zhou (University of Maryland)

Date: Mon. October 10th, 2022, 12:45 pm-1:45 pm
Location: Zoom ONLY
Website: https://mse.umd.edu/clark/faculty/1395/You-Zhou
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Wigner crystals in atomically thin heterostructures

You Zhou

Materials Science and Engineering, University of Maryland

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Abstract: A Wigner solid — a crystal made entirely of electrons — is a model system for understanding electron correlation physics that underlies a wide range of phenomena, including high-temperature superconductivity and metal-insulator transitions. Despite decades of research, it has been challenging to realize Wigner crystals in the so-called quantum regime where quantum effects dominate over thermal fluctuations. In this talk, I will introduce how atomically thin semiconductors, such as transition metal dichalcogenides, form an exciting new materials platform to investigate these correlated electronic states. I will describe how we improve the materials quality, probe the crystallization of electrons from optical spectroscopy, and determine how they melt. Finally, I will discuss how these experiments can open new avenues for simulating quantum many-body states and quantum information processing.

Fig. courtesy of Quanta Magazine

 

Host: Xuan Gao

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