STM/STS on proximity-coupled superconducting graphene

ORAL

Abstract

Graphene in good electrical contact with a superconductor has been observed to have an enhanced proximity effect. Application of a magnetic field is expected to generate an Abrikosov lattice of superconducting vortices, each containing Andreev bound states in its core. With our versatile, homebuilt, low temperature scanning tunneling force microscope (STM/SFM), we investigate the electronic properties of graphene on superconducting NbSe$_2$ in a magnetic field and search for signatures of these vortex core states.

*This work was supported by the STC Center for Integrated Quantum Materials, NSF Grant No. DMR-1231319

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Authors

  • Maoz Ovadia

    • Harvard University

  • Yu Ji

    • Harvard University

  • Jennifer Hoffman

    • Harvard University

  • Joel I-Jan Wang

    • Massachusetts Institute of Technology/Harvard School of Engineering and Applied Sciences
    • Massachusetts Institute of Technology

  • Pablo Jarillo-Herrero

    • Massachusetts Institute of Technology
    • Physics Department, Massachusetts Institute of Technology
    • Massachusetts Inst of Tech-MIT