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

Event Date:
2022-03-03T10:00:00
2022-03-03T11:00:00
Event Location:
Zoom link in description
Speaker:
Ke Zou: University of British Columbia - Department of Physics and Astronomy
Related Upcoming Events:
Event Information:

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


Speaker: Ke Zou

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

Add to Calendar 2022-03-03T10:00:00 2022-03-03T11:00:00 Ke Zou: Recent progress on understanding the superconductivity of bulk and monolayer FeSe Event Information: https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09 Meeting ID: 684 7017 3961 Passcode: 113399 Speaker: Ke Zou 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. F. Li, I. Elfimov, and G.A. Sawatzky, “Modulation doping of the FeSe monolayer on SrTiO3”, submitted (2022). 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). 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 Research Focus: Our research interests are in the growth of complex oxide and chalcogenide films by molecular beam epitaxy and the studies of their properties and functions. We aim to achieve scientific and technological breakthroughs in new materials and new functional devices. We integrate molecular beam epitaxy synthesis with nanostructure fabrication and characterization techniques for physical and electronic structures, to explore and control the generated properties in new materials and in new forms of materials, such as in heterostructures and gated field-effect transistors. Event Location: Zoom link in description