Fermi-liquid-like quasiparticle excitations in Sr$_{2}$RhO$_{4}$

ORAL

Abstract

The layered 4d transition metal oxide Sr$_{2}$RhO$_{4}$ supports a highly anisotropic, well-defined Fermi-liquid-like electron fluid. Angle resolved photoemission spectroscopy shows a Fermi surface and quasiparticle effective masses in quantitative agreement with bulk de Haas-van Alphen data. Sr$_{2}$RhO$_{4}$ thus presents a prime opportunity to study the electronic self energy in a well-defined model system. To this end, we present a comprehensive spectral function analysis of high resolution angle resolved photoemission data from Sr$_{2}$RhO$_{4}$. Preliminary data at very low photon energies are presented and compared to state-of-the-art data taken at conventional UV photon energies.

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Authors

  • William Dunkel

  • Felix Baumberger

  • Worawat Meevasana

  • Donghui Lu

    • Stanford University

  • Robin Perry

  • Andy Mackenzie

    • St. Andrews University

  • Zhi-Xun Shen

    • Stanford University