Characterizing the Electronic Properties of CuPc/Gr/hBN Heterostructures

POSTER

Abstract

Copper Phthalocyanine (CuPc) is an molecular organic semiconductor with a non-zero magnetic moment. By depositing CuPc on a graphene/hBN electronic device, we find that the electronic properties of the original graphene/hBN heterostructure are significantly modified, revealed by a sign reversal of the magnetoresistance as well as the onset of an anisotropy in magnetic field. Differential conductance measurements show features that change with temperature, pointing to a rearrangement of the CuPc molecules on the graphene/hBN surface as the temperature is increased. Atomic Force Microscopy (AFM) show a different molecular arrangement of the CuPc molecules on graphene/h-BN with respect to hBN.

*Sample fabrication and electron transport measurements were supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under award number DE-SC0018154. Atomic force microscopy imaging was supported by the MRI program of the National Science Foundation under the award number 2018653. Jacob Weber and Vinh Tran were supported by the Cal. State. Long Beach and Ohio State University Partnership for Education and Research in Hard and Soft Materials, a National Science Foundation PREM, under Grant No. 2122199.

Presenters

  • Vinh Tran

    • California State University, Long Beach

Authors

  • Vinh Tran

    • California State University, Long Beach

  • Francisco Ramirez

    • California State University, Long Beach

  • Jacob Weber

    • California State University, Long Beach

  • Ryan T Mizukami

    • California State University, Long Beach

  • Maya H Martinez

    • California State University, Long Beach

  • Patrick T Barfield

    • California State University, Long Beach

  • Kenji Watanabe

    • National Institute for Materials Science
    • Research Center for Functional Materials, National Institute of Materials Science
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-044, Japan
    • NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan

  • Takashi Taniguchi

    • National Institute for Materials Science
    • Kyoto Univ
    • International Center for Materials Nanoarchitectonics, National Institute of Materials Science
    • Kyoto University
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • National Institute For Materials Science
    • NIMS
    • National Institute for Material Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan

  • Thomas Gredig

    • California State University, Long Beach

  • Claudia Ojeda-Aristizabal

    • California State University, Long Beach