Signature of the orbital character in the electronic band structure of C<sub>60 </sub>through photoemission experiments

ORAL

Abstract

Using Angle-Resolved Photoemission Spectroscopy (ARPES), we have observed strong photon-dependent oscillations of C60 valence band clusters’ intensity. These oscillations have been reported in the literature and are related to the spherical geometry of the C60 molecule, where photoelectron waves emanating from each carbon atom in the molecule experience interference inside the molecule. Here, we report the analysis of such oscillations coming from a highly ordered C60 thin film crystal. Using Fourier transform analysis, we show that the frequency and phase of these oscillations are intimately related to the orbital character of the different C60 valence band clusters. These results open avenues to probe the orbital character of the band structure of other fullerene or large molecule thin films.

*Ryan Reno and Claudia Ojeda-Aristizabal were supported by the Department of Energy, Office of Basic Energy Sciences. Award number: DE-SC0018154.

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Presenters

  • Ryan Reno

    • California State University, Long Beach

Authors

  • Ryan Reno

    • California State University, Long Beach

  • Drew W Latzke

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

  • Jonathan Denlinger

    • Advanced Light Source, Lawrence Berkeley National Laboratory

  • Alessandra Lanzara

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

  • Claudia Ojeda-Aristizabal

    • California State University, Long Beach