Searching for ideal Bi-system topological insulator, Pb-system topological crystalline insulator and their topological superconductor

Dr. Genda Gu
Fellow of American Physical Society (2011)
BNL Science and Technology Award (Brookhaven National Laboratory, USA) (2010)

时间: 6月5日（周四）上午10:00
地点：唐仲英楼B501

报告摘要：The discovery of 3D topological insulator materials and topological superconductor open up a new research field in the condensed matter physics. In order to search for the ideal topological insulator, topological crystalline insulator and topological superconductor, we have grown a large number of the single crystals of Bi-system (Bi-Sb-Te-Se) topological insulator Pb-system (Pb-Sn-In-Te-Se) topological crystalline insulator and their topological superconductor. We have measured the physical properties on these single crystals by various techniques. We have studied the effect of crystal growth condition, impurity and composition on the bulk electrical conductivity of these single crystals. We try to find out which composition and crystal growth condition is the best for the ideal topological insulator, topological crystalline insulator and topological superconductor. We have got the bulk topological superconductor with Tc =4.7K.

报告人简介：

2012-present, Senior Physicist, Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory, NY, USA
2012--present, Adjunct Professor, Physics Department, Stony Brook University, NY, USA
2005--present, Adjunct Professor, Materials Science Department, Stony Brook University, NY, USA
2003--2011, Physicist, CMP&MS, BNL, NY, USA
2001--2002, Associate Physicist, CMP&MS, BNL, NY, USA
1996--2000, Australian Research Council Queen Elizabeth II Fellow, School of Physics, University of New South Wales (UNSW), Sydney, Australia
1995-1995, ISTEC Fellow, Superconductivity Research Laboratory, International Superconductivity Technology Center (ISTEC), Tokyo 135, Japan.
1993-1994, UNSW Vice-Chancellor Post-Doctoral Fellow, School of Physics, UNSW, Australia.
1991-1992, ISTEC Post-Doctoral Fellow, Superconductivity Research Laboratory, ISTEC, Japan.
1989-1990, Chinese Post-Doctoral Fellow, University of Science and Technology of China, Hefei, China