[Seminar] Exploring competing electronic phases under extreme conditions in superconducting FeSe1-xSx
Professor (Associate Professor) Amalia Coldea - University of Oxford
Exploring competing electronic phases under extreme conditions
in superconducting FeSe1-xSx
Iron-based chalcogenides superconductors offer a unique playground of exploration of superconductivity emerging from competing electronic phases, such as nematic and spin-density wave phases. In this talk, I will present experimental data on single crystals of superconducting FeSe1-xSx tuned by chemical and applied external pressure. From the detection of quantum oscillations in different regimes, we can follow the evolution of key electronic ingredients such as Fermi surfaces sizes and quasiparticle effective masses. These studies help to develop novel theories to understand the high-temperature superconductivity of iron-chalcogenides.
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