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Doping dependence of the electronic structure of potassium-doped fullerenes studied by ARPES

ORAL

Abstract

Quantum many-body interactions trigger new and unexpected emergent phenomena, such as superconductivity and magnetism, even in weak correlation materials, as recently exploited in twisted bilayer graphene. One classical example is superconductivity in Alkali-doped fullerides (e.g. K3C60) where conventional BCS theory and unconventional Mott physics meet. Despite a large number of works, the origin and the detailed mechanism of such a state remain still elusive. Here, by using angle-resolved photoemission spectroscopy on fullerene films grown on the Bi2Se3 substrate, we study the insulator-metal transition derived by doping. With a controllable potassium doping mechanism, doping dependence of the electronic band structures is investigated.

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Presenters

  • Ping Ai

    Materials Sciences Division, Lawrence Berkeley National Laboratory

Authors

  • Ping Ai

    Materials Sciences Division, Lawrence Berkeley National Laboratory

  • Drew W Latzke

    Materials Sciences Division, Lawrence Berkeley National Laboratory

  • Claudia Ojeda-Aristizabal

    Department of Physics and Astronomy, California State University, Long Beach, Physics & Astronomy, California State University, Long Beach

  • Ryo Mori

    Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley

  • Alex K Zettl

    Physics Department, University of California, Berkeley, Department of Physics, University of California, Materials Sciences Division, Lawrence Berkeley National Laboratory, Department of Physics, University of California, Berkeley

  • Jonathan Denlinger

    Materials Sciences Division, Lawrence Berkeley National Laboratory, Lawrence Berkeley National Laboratory, Advanced Light Source, Advanced Light Source, LBNL, Advanced light source, Advanced Light Source, Lawrence Berkeley National Lab

  • Alessandra Lanzara

    University of California, Berkeley, Department of Physics, University of California, Physics, University of California, Berkeley, Lawrence Berkeley National Laboratory, Department of Physics, University of California Berkeley, Physics, University of California Berkeley, Physics, UC Berkeley