Angle-resolved Photoemission Study of Ca$_{1.8}$Sr$_{0.2}$RuO$_{4}$

ORAL

Abstract

We report angle-resolved photoemission spectroscopy results of the Fermi surface of Ca$_{1.8}$Sr$_{0.2}$RuO$_{4}$ which is at the boundary between a magnetic metal and an antiferromagnetic insulator in the phase diagram of the Ca-substituted strontium ruthenates. We did observe an orbital-selective Mott transition, which is, however, different with what has been predicted theoretically [1] for this material. Our ARPES results are consistent with both magnetic and transport properties observed in this material. \newline [1] V. I. Anisimov et al., Eur. Phys. J. B \textbf{25}, 191(2002)

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Authors

  • Madhab Neupane

    • Department of Physics, Boston College, Chestnut Hill, MA 02467, USA
    • Boston College

  • P. Richard

    • Department of Physics, Boston College, Chestnut Hill, MA 02467, USA

  • Z.-H. Pan

    • Department of Physics, Boston College, Chestnut Hill, MA 02467, USA

  • Y. Xu

    • Department of Physics, Boston College, Chestnut Hill, MA 02467, USA

  • R. Jin

    • Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831,USA

  • D. Mandrus

    • Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831,USA

  • X. Dai

    • Institute of Physics and National Laboratory for Condensed Matter Physics, Beijing, China

  • Z. Wang

    • Department of Physics, Boston College, Chestnut Hill, MA 02467, USA

  • H. Ding

    • Department of Physics, Boston College, Chestnut Hill, MA 02467, USA