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Ke Zou: Recent progress on understanding the superconductivity of bulk and monolayer FeSe

March 3 @ 10:00 am - 11:00 pm

https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09
Meeting ID: 684 7017 3961
Passcode: 113399


Speaker: Ke Zou, Stewart Blusson Quantum Matter Institute

Abstract:

The physics of high-temperature superconductors is usually governed by the interplay of the spin and charge degrees of freedom. FeSe has the simplest chemical composition among Fe-based superconductors, yet monolayer FeSe on SrTiO3 substrate reports one of the highest superconducting transition temperatures. I will summarize the progress on understanding its superconductivity from my group and other groups in the recent couple of years. We will discuss the specific roles of charge transfer, spin magnetic moment, and phonon coupling in this system.

  1. F. Li, I. Elfimov, and G.A. Sawatzky, “Modulation doping of the FeSe monolayer on SrTiO3”, submitted (2022).
  2. C. Liu, H. Shin, A. Doll, H.H. Kung, R.P. Day, B.A. Davidson, J. Dreser, G. Levy, A. Damascelli, C. Piamonteze, and K. Zou, “High-temperature superconductivity and robustness against magnetic polarization in monolayer FeSe on EuTiO3”, npj Quantum Materials 6, 85 (2021).
  3. C. Liu, R.P. Day, F. Li, R.L. Roemer, S. Zhdanovich, S. Gorovikov, T. Pedersen, J. Jiang, S. Lee, M. Schneider, D. Wong, P. Dosanjh, F.J. Walker, C.H. Ahn, G. Levy, A. Damascelli, G.A. Sawatzky, and K. Zou, “High-order replica bands in monolayer FeSe/SrTiO3 revealed by polarization-dependent photoemission spectroscopy”, Nature Communications 12, 4573 (2021).

Bio: Assistant Professor, Department of Physics and Astronomy – SBQMI

Ke Zou Department of Physics and Astronomy

Details

Date:
March 3
Time:
10:00 am - 11:00 pm
Website: