Condensed-Matter Physics & Materials Science Seminar

"Laser ARPES on High-Temperature Superconductors"

Presented by Xingjiang Zhou, National Lab for Superconductivity, Institute of Physics, Chinese Academy of Sciences, China

Monday, March 5, 2012, 2:00 pm — Small Seminar Room, Bldg. 510

The utilization of the Vacuum Ultraviolet (VUV) laser as a light source has elevated the angle-resolved photoemission (ARPES) technique to a new level. Its unique advantages, such as super-high energy resolution (better than 1 meV), high momentum resolution, super-high photon flux and enhanced bulk sensitivity have made it possible to do some critical experiments that are not doable before. In this talk, I will first report some latest progress of laser-based photoemission techniques, including the development of VUV-laser-based spin-resolved ARPES. Then I will highlight some examples on using laser-ARPES to probe the many-body effects, superconducting gap and pseudogap, Fermi arc and Fermi pocket, and the pairing mechanism in high temperature superconductors.

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Hosted by: Genda Gu

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