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Investigation of pairing in the multi-band superconductor EuRbFe4As4 using 2e-ARPES

ORAL

Abstract

Strongly-correlated electron physics remains an area of intense intrigue in condensed matter systems. Here, we present our group's progress in two electron coincidence photoemission spectroscopy (2e-ARPES), which enables the detection of momenta and energy of correlated electrons emitted from a single incident photon. Namely, we show experimental evidence of pairing in the superconductor EuRbFe4As4, which is a member of the iron pnictide superconducting family. This experimental technique holds tremendous promise for answering many outstanding key condensed matter physics questions, such as the pairing mechanisms of unconventional superconductors.

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Presenters

  • Jack Zwettler

    University of Illinois at Urbana-Champaign

Authors

  • Jack Zwettler

    University of Illinois at Urbana-Champaign

  • Henry Mahmoud Amir

    University of Illinois at Urbana-Champaign

  • Ka Ho Wong

    University of Illinois at Chicago

  • Pranav Mahaadev

    University of Illinois, University of Illinois at Urbana-Champaign

  • Sam Rosner

    University of Illinois, University of Illinois at Urbana-Champaign

  • Dipanjan Chaudhuri

    University of Illinois at Urbana-Champaign

  • Peter Abbamonte

    University of Illinois at Urbana-Champaign

  • Abhay Pasupathy

    Columbia University, Brookhaven National Laboratory (BNL)

  • Shigeyuki Ishida

    AIST, Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan

  • Eisaki Hiroshi

    AIST, National Institute of Advanced Industrial Science and Technology, Research Institute for Advanced Electronics and Photonics, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan

  • Dirk Klaus Morr

    University of Illinois at Chicago

  • Fahad Mahmood

    University of Illinois at Urbana-Champaign