Unusual electronic and magnetic responses from sulfur-decorated graphene.

ORAL

Abstract

Interactions between two different materials can produce strong electronic correlations that do not exist when each material stands alone. We search for such correlations from graphene, a non-magnetic semi-metal, decorated by sulfur, a diamagnetic insulator, using angle-resolved photoemission spectroscopy and magneto-transport measurements. Sulfur-decorated graphene exhibits unusual electronic and magnetic responses that are clearly distinguished from clean graphene. Our findings provide intriguing insights on the search for novel quantum phases in graphene-based compounds.

–

Authors

  • Choongyu Hwang

    • Materials Sciences Division, Lawrence Berkeley Natl. Lab. and Department of Physics, Pusan National University, South Korea

  • S. A. Cybart

    • Materials Sciences Division, Lawrence Berkeley Natl. Lab. and Department of Physics, University of California, San Diego, CA

  • S. M. Wu

    • Materials Sciences Division, Lawrence Berkeley Natl. Lab. and Department of Physics, University of California, San Diego, CA

  • R. C. Dynes

    • Materials Sciences Division, Lawrence Berkeley Natl. Lab. and Department of Physics, University of California, San Diego, CA

  • S. J. Shin

    • Department of Materials Science and Engineering, University of California, Berkeley, CA and Materials Sciences Division, Lawrence Berkeley Natl. Lab.

  • E. E. Haller

    • Department of Materials Science and Engineering, University of California, Berkeley, CA and Materials Sciences Division, Lawrence Berkeley Natl. Lab.

  • S. Kim

    • Department of Physics, Pohang University of Science and Technology, South Korea

  • K. Kim

    • Department of Physics, Pohang University of Science and Technology, South Korea

  • B. I. Min

    • Department of Physics, Pohang University of Science and Technology, South Korea

  • T. G. Rappoport

    • Instituto de Fisica, Universidade Federal do Rio de Janeiro, Brazil

  • C. Jozwiak

    • Advanced Light Source, Lawrence Berkeley Natl. Lab.

  • A. V. Fedorov

    • Advanced Light Source, Lawrence Berkeley Natl. Lab.

  • S. -K. Mo

    • Advanced Light Source, Lawrence Berkeley Natl. Lab.

  • A. H. Castro Neto

    • Graphene Research Centre, National University of Singapore

  • D. -H. Lee

    • Department of Physics, University of California, Berkeley, CA, and Materials Sciences Division, Lawrence Berkeley Natl. Lab.

  • A. Lanzara

    • Department of Physics, University of California, Berkeley, CA, and Materials Sciences Division, Lawrence Berkeley Natl. Lab.