题目：The Effect of a Sliding Charge Density Wave: DC-driven Quantum Tunneling and Oscillation

报告人：Prof. Yi Zhou（周毅）

时间：2023年3月2日（周四）16：00

地点：紫金港西区海纳苑8幢--215报告厅

Abstract: A charge density wave (CDW) is a static and periodic modulation of conduction electrons in space. Here we propose that the uniform motion of a CDW will generate the temporal periodicity from its spatial periodicity, that gives rise to an intrinsic DC-AC converter. In particular, a sliding quasi-one-dimensional (quasi-1D) CDW can be modeled by a time-periodic Hamiltonian and such a quasi-1D Floquet system can be exactly solved. Subsequently, sliding-assisted quantum tunneling and non-equilibrium quantum transport through a mesoscopic device composed of a sliding CDW and metallic leads has been studied. The implication to newly discovered inverse-current quantum-electro oscillations in a quasi-1D CDW insulator has been discussed.

About the speaker:

Yi Zhou is a professor at Institute of Physics, Chinese Academy of Sciences. He received his B.S. degree and Ph. D. in physics from Tsinghua University in 1998 and 2004 respectively. After postdoctoral journey, he became a faculty member in Zhejiang University in 2009 and moved to current position in 2019. His main research interests include quantum many-particle physics and theoretical condensed matter physics.

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