Fermi surfaces and band dispersions in 4$d$ compound Sr$_2$RhO$_4$

ORAL

Abstract

Fermi surface (FS) topology and band dispersions in 4$d$ compound Sr$_2$RhO$_4$ are studied by angle-resolved photoemission spectroscopy (ARPES) and compared with the band structure calculation within the local-density approximation (LDA). The measured FS deviates significantly from the calculation, suggesting the electronic correlation effects are not negligible in this system. Core-level X-ray photoemission spectrum of Rh 3$d$ shows correlation-induced satellite, from which we estimate the strength of the correlation, by simulating the spectrum with the recently proposed model calculation of core-level spectra incorporating the dynamical mean-field theory (DMFT).

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Authors

  • B.J. Kim

    • School of Physics and Center for Strongly Correlated Materials Research, Seoul National University, Seoul, Korea

  • H. Koh

    • Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

  • I. Nagai

  • S.I. Ikeda

    • National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan

  • J.J. Yu

    • School of Physics and Center for Strongly Correlated Materials Research, Seoul National University, Seoul, Korea

  • H.-D. Kim

    • Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784, Korea

  • S. -J. Oh

    • School of Physics and Center for Strongly Correlated Materials Research, Seoul National University, Seoul, Korea

  • C. Kim

    • Institute of Physics and Applied Physics, Yonsei University, Seoul, Korea