Abnormal temperature-dependent self-energy in graphene

ORAL

Abstract

Dynamics of charge carriers are determined by their self-energy associated with many-body interactions. By using angle-resolved photoemission spectroscopy, we study the origin of abnormal temperature-dependent self-energy in graphene, and discuss the results in terms of a quantum phase transition as a function of temperature. Our findings provide another example of novel electronic properties of graphene and deeper understanding of the ground state of charge carriers in graphene.

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Authors

  • Choongyu Hwang

    • LBNL

  • Daniel Garcia

    • UC Berkeley, LBNL

  • David Siegel

    • UC Berkeley, LBNL

  • Pu Yu

    • UC Berkeley, LBNL

  • Swanee Shin

    • UC Berkeley, LBNL

  • Xiaozhu Yu

    • LBNL

  • Alexei Fedorov

    • ALS, LBNL

  • Eugene Haller

    • UC Berkeley, LBNL

  • Ramamoorthy Ramesh

    • UC Berkeley, LBNL

  • Dung-Hai Lee

    • UC Berkeley, LBNL

  • Alessandra Lanzara

    • UC Berkeley, LBNL