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TT: Fachverband Tiefe Temperaturen

TT 52: Superconductivity: Fe-based Superconductors - FeSe and LiFeAs

TT 52.2: Talk

Wednesday, March 14, 2018, 09:45–10:00, HFT-FT 101

Interface high temperature superconductivity in FeSe/TiO₂ — •Lili Wang and Qikun Xue — Tsinghua University, Beijing, China

The discovery of high temperature superconductivity with a superconducting gap of  20 meV in monolayer FeSe films epitaxially grown on SrTiO₃ substrate has stimulated tremendous interest in superconductivity community, for it opens new avenue for both raising superconducting transition temperature and understanding the pairing mechanism of unconventional high temperature superconductivity. In this talk, I will present the experimental progress on interface enhanced superconductivity in FeSe/TiO₂ interfaces, studied by scanning tunneling microscopy/spectroscopy, angle-resolved photoemission spectroscopy and transport experiments. Then I will discuss the roles of interfaces, such as charge transfer and electron-phonon coupling, inferred from those studies.
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