Past Events

It is generally recognized that disorder could profoundly change the properties of materials. The effect of disorder on the superconductor-insulator transition has been an outstanding problem in condensed matter physics especially in the presence of interaction. An effective way to explore the effect of disorder on the superconductor-insulator transition is transport measurement. Thanks to the fast progress of experimental techniques in the field of  cold atoms, several experiments have been conducted by the ETH group to explore the effect of disorder on the transport properties of strongly interacting two-dimensional Fermi gas. These highly controlled experiments provide good opportunities to gain better understanding about the effect of disorder and its role in the superconductor-insulator transition. 

 

In this talk, I will first explain one of these experiments and then some preliminary work that I have conducted mainly on two-particle and four-particle problems based on exact diagonalization method. For two particles, the localization-delocalization transition will be discussed. For four particles, the effect of disorder on Drude weight will be given. At last, I will give a brief introduction about speckle pattern which is widely used in experiments to generate correlated disorder. Our future work will focus on the effect of correlated disorder.