Symmetry-lowering in the nematic phase of FeSe superconductor
The aim of this proposal is to perform a combined Rietveld and pair distribution function (PDF) analysis of neutron diffraction data collected at low temperatures on the structurally simple prototype Fe-based superconductor FeSe. Unconventional superconductivity is well known to emerge in the vicinity of symmetry-breaking phase transitions. In FeSe, a precursor state with a pseudogap has been identified based on several anomalies in the electronic properties above the superconducting transition at Tc „l 8 K. Basing on our preliminary results obtained at the ID22 beamline of the ESRF, here, we would like to investigate a structural component associated with this precursor state using a combined Rietveld and pair distribution function (PDF) analysis of powder neutron diffraction data.
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Sahana Rößler; CODURI Mauro; CUELLO Gabriel; RITTER Clemens; SCAVINI Marco and TSIRLIN Alexander. (2019). Symmetry-lowering in the nematic phase of FeSe superconductor. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-23-709
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