Collapse of Critical Nematic Fluctuations in FeSe under Pressure

Physical Review Letters
Pierre MassatY Gallais

Abstract

We report the evolution of the electronic nematic susceptibility in FeSe via Raman scattering as a function of hydrostatic pressure up to 5.8 GPa where the superconducting transition temperature T_{c} reaches its maximum. The critical nematic fluctuations observed at low pressure vanish above 1.6 GPa, indicating they play a marginal role in the fourfold enhancement of T_{c} at higher pressures. The collapse of nematic fluctuations appears to be linked to a suppression of low energy electronic excitations which manifests itself by optical phonon anomalies at around 2 GPa, in agreement with lattice dynamical and electronic structure calculations using local density approximation combined with dynamical mean field theory. Our results reveal two different regimes of nematicity in the phase diagram of FeSe under pressure: a d-wave Pomeranchuk instability of the Fermi surface at low pressure and a magnetic driven orthorhombic distortion at higher pressure.

References

Oct 10, 2006·Physical Review Letters·Philipp WernerAndrew J Millis
Sep 9, 2008·Proceedings of the National Academy of Sciences of the United States of America·Fong-Chi HsuMaw-Kuen Wu
Sep 16, 2010·The Journal of Physical Chemistry. B·Ravhi S KumarChangfeng Chen
Aug 11, 2012·Science·Jiun-Haw ChuIan R Fisher
Oct 15, 2013·Physical Review Letters·Rafael M FernandesJörg Schmalian
Feb 4, 2014·Physical Review Letters·Y GallaisA Forget
Nov 11, 2014·Nature Materials·S-H BaekB Büchner
Mar 21, 2015·Physical Review Letters·S LedererS A Kivelson
Jan 2, 2016·Physical Review Letters·Kristjan Haule, Turan Birol
Jan 15, 2016·Physical Review Letters·J BuhotM-A Measson
Jul 7, 2016·Proceedings of the National Academy of Sciences of the United States of America·Suguru HosoiTakasada Shibauchi
Aug 3, 2016·Proceedings of the National Academy of Sciences of the United States of America·Pierre MassatYann Gallais
Sep 2, 2016·Nature Communications·K KothapalliA I Goldman
Dec 15, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Anna E Böhmer, Andreas Kreisel

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Citations

Apr 10, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Nenad Lazarevic, Rudi U Hackl
Apr 13, 2019·Physical Review Letters·Romain GrassetMarie-Aude Méasson
Nov 10, 2021·Physical Chemistry Chemical Physics : PCCP·Tingting LiZhi Zeng

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