Prof. Zhu-An Xu [Department of Physics, Zhejiang University, China]

Title: Exploring novel superconductors by chemical doping and chemical pressure

Time: 10:00 - 11:00am, April 27, Monday
Place: Conference room 201, Building 6, HPSTAR (Shanghai)
Host: Xiao-Jia Chen

Abstract:

Chemical pressure induced by element substitutions has played a crucial role in the new unconventional superconductors, i.e., iron-based pnictides, BiS-based sulfides, and recently discovered A2Cr3As3 quasi-1D systems (A=K, Rb, Cs). The investigation on the chemical pressure and quantum criticality in FeAs-based superconducting, i.e., P-doped 1111-type CeFeAsO systems, two superconducting domes in RFeAs1-xPxO (R=La, Pr etc) systems, and Kondo breakdown quantum criticality in CeNiAs1-xPxO system will be presented. The anomalous chemical pressure effect in Se-doped Eu3Bi2S4F4 and the pressure effect on superconductivity in the recently-discovered A2Cr3As3 will also be presented.

Biography of the Speaker:

Prof. Zhu-An Xu, born in 1966, Zhejiang Province. “Changjiang Scholar” Distinguished Professor, and director of the Institute of Condensed Matter Physics, at Department of Physics, Zhejiang University. Obtained B.S. degree at the University of Science and Technology in 1988, PhD at Zhejiang University in 1994. Lecturer and associate professor at Zhejiang University from September 1994 – July 1997, visiting research fellow at Princeton University from August 1997 – February 2000, professor at Zhejiang University since July 2000.

Research interests include unconventional superconductivity, strongly correlated electron systems, quantum phase transitions, and magnetic materials. He has published more than 180 papers which are cited about 3000 times. He was awarded “Outstanding Young” Fund of NSFC in 2002, and received the 1st class prize of Natural Science Award of MOE, China, in 2013.