Wuhan University

Abstract:

Moire superlattices formed by two-dimensional semiconductors of transition metal dichalcogenides (e.g., WSe2 and MoTe2 ) have become an important platform for studying novel quantum phases arising from strong correlation and/or topological effects. Quantum phases observed in semiconductor moire superlattices include Mott insulators, generalized Wigner crystals, integer, and fractional quantum anomalous Hall insulators, as well as integer and fractional quantum spin Hall insulators. In this talk, I will review theoretical and experimental developments in this field, including our theoretical work on the interaction-driven topological phase diagram in twisted bilayer MoTe2.

About Speaker:

Fengcheng Wu is a Professor in the School of Physics and Technology at Wuhan University. He received his BSc in Physics from University of Science and Technology of China in 2011 and PhD in physics from University of Texas at Austin in 2016. He performed postdoc research at Argonne National Laboratory (2016-2018) and University of Maryland (2018-2020). His research is on condensed matter theory, with a focus on low-dimensional quantum physics.

More details can be found in http://seminar.cpsjournals.cn/