Spin-correlated electronic state on the surface of a spin-orbit Mott system

Chang Liu, Su Yang Xu, Nasser Alidoust, Tay Rong Chang, Hsin Lin, Chetan Dhital, Sovit Khadka, Madhab Neupane, Ilya Belopolski, Gabriel Landolt, Horng Tay Jeng, Robert S. Markiewicz, J. Hugo Dil, Arun Bansil, Stephen D. Wilson, M. Zahid Hasan

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We use angle-resolved photoemission spectroscopy to show that the near-surface electronic structure of a bulk insulating iridate Sr3Ir2O7 lying near a metal-Mott insulator transition exhibits weak metallicity signified by finite electronic spectral weight at the Fermi level. The surface electrons exhibit a spin structure resulting from an interplay of spin-orbit, Coulomb interaction and surface quantum magnetism. Our results shed light on understanding the exotic quantum entanglement and transport phenomena in iridate-based oxide devices.

Original languageEnglish
Article number045127
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number4
DOIs
Publication statusPublished - 2014 Jul 22

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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