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Statistics of Wigner Delay Time in Disordered Systems

作者:点击次数:更新时间:2018年11月15日

报告人及单位:许富明副教授    深圳大学

报告时间:20181116号星期五上午10:00-11:00

报告地点:物理楼LE201

邀请人:  张学锋

 

报告内容简介:We numerically investigated the statistical properties of Wigner delay time in disordered 1D, 2D and 3D systems. Tight-binding approximation and Greens function formalism are adopted in the calculation. Universal features have been discovered on the distribution function of Wigner delay time in the strongly localized regime. A piece-wise-power law behavior of the time distribution emerges, which is independent of disorder strength, system size, electron energy, and symmetry class of the Hamiltonian. Since Wigner delay time is closely related to the partial density of states (PDOS), the application of PDOS in ac quantum transport will be briefly introduced.

报告人简介:许富明,2011年于香港大学物理系获得博士学位,之后在香港大学从事博士后研究工作。2014年入职深圳大学物理与能源学院。主要研究方向是纳米器件和介观系统中的量子输运,包括介观系统输运性质的普适性行为,以及二维材料和拓扑绝缘体系统中的准粒子的输运特性等。