Colloquium

Title: RPES Study on High-Temperature Superconductors and Topological Insulators

Speaker:  Xingjiang Zhou , National Lab for Superconductivity, Institute of Physics CAS

Location: Room 111, Physics Building

Time: 15:00-16:00, Wed, Oct 29, 2014

Abstract:

The mechanism of high temperature superconductivity in the copper-based and iron-based superconductors is a prominent and challenging issue in condensed matter physics. Angle-Resolved photoemission spectroscopy (ARPES), as a powerful technique to directly probe the electronic structure of materials, has played a key role in studying high temperature superconductors.  In this talk, after briefly introducing the latest development of photoemission techniques, I will highlight some of our recent results in utilizing the state-of-the-art ARPES to study the copper-based [1,2] and iron-based [3,4,5] high temperature superconductors, as well as topological insulators [6,7].

1. Yingying Peng and X. J. Zhou et al., Nature Communications 4, 2459(2013).
2. Junfeng He and X. J. Zhou et al., Physical Review Letters 111, 107005 (2013).
3. Defa Liu and X. J. Zhou et al., Nature Communications 3, 931 (2012).
4. Shaolong He and X. J. Zhou et al., Nature Materials 12, 605 (2013).
5. Xu Liu and X. J. Zhou et al., Nature Communications 5, 5047 (2014).
6. Chaoyu Chen and X. J. Zhou et al., PNAS 109, 3694 (2012).
7. Zhuojin Xie and X. J. Zhou et al., Nature Communications 5, 3382(2014).