Broken symmetry states in FeSe<sub>1-x</sub>S<sub>x</sub> measured with STM/S

ORAL

Abstract

Strong electron correlations in cuprate high-temperature superconductors are known to be necessary for the emergence of exotic phases including and beyond superconductivity. Despite several phenomenological parallels between the cuprates and Fe-based superconductors, the degree to which strong correlations determine the phase diagram in the latter is uncertain. We used scanning tunneling microscopy and spectroscopy to investigate the local symmetries of the electronic states in FeSe1-xSx to search for possible signatures of strong correlations. An analysis of the energy dependence in our spectroscopic mappings, complemented by angle-resolved photoemission spectroscopy measurements and theoretical simulations, points to an electronic order that might originate from orbital-selective strong correlations. 

*This material is based upon work supported by the National Science Foundation under Grants No. 1845994 and No. 2034345. The synthesis was supported by the UC Laboratory Fees Research Program (LFR-20-653926). Some of the research described in this paper was carried out at the Canadian Light Source, a national research facility of the University of Saskatchewan, which is supported by the Canada Foundation for Innovation (CFI), the Natural Sciences and Engineering Research Council (NSERC), the National Research Council (NRC), the Canadian Institutes of Health Research (CIHR), the Government of Saskatchewan, and the University of Saskatchewan.This work was supported by the Alfred P. Sloan Fellowship (E.H.d.S.N.).

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Presenters

  • MORGAN A WALKER

    • University of California, Davis

Authors

  • MORGAN A WALKER

    • University of California, Davis

  • Timothy J Boyle

    • Department of Physics, University of California, Davis
    • University of California, Davis

  • Journey Byland

    • University of California, Davis

  • Marvin A Muller

    • Ruhr Univ Bochum

  • Jakob Boeker

    • Ruhr Univ Bochum

  • Zitong Zhao

    • University of California, Davis

  • Ryan P Day

    • University of California, Berkeley
    • University of British Columbia

  • Matteo Michiardi

    • University of British Columbia

  • Sergey Zhdanovich

    • University of British Columbia

  • Sergey Gorovikov

    • Canadian Light Source

  • Tor Pedersen

    • Canadian Light Source

  • Andrea Damascelli

    • University of British Columbia
    • Quantum Matter Institute, University of British Columbia

  • Adrian Gozar

    • Yale University

  • Ilya Eremin

    • Ruhr Univ Bochum

  • Valentin Taufour

    • University of California, Davis
    • University of California Davis

  • Eduardo H Da Silva Neto

    • Yale University