Probing the Properties of MPc/Multilayer-graphene/hBN heterostructures through quantum coherent transport

POSTER

Abstract

Multilayer-graphene/hBN heterostructures are often used to probe the electronic properties of other materials. For instance, magnetotransport measurements at low magnetic fields on multilayer graphene usually show a signature of weak localization, a consequence of the quantum interference of the electronic wave functions. The presence of metal-phthalocyanine (MPc) molecules in close proximity to the multilayer-graphene/hBNheterostructure can alter the quantum coherent transport, inducing for example weak antilocalization if the metal in the MPc molecule has an important spin-orbit coupling. In the same way, the back gate dependence of the resistance of the heterostructure before and after the deposition of the molecules, can reveal charge transfer between the molecules and the multilayer graphene. Here, we show data on a CuPc/multilayer-graphene/hBN heterostructure that puts in evidence charge transfer from graphene to the CuPc as well as consequences on weak localization measurements.

*The primary funding of this work was provided by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under award number DE-SC0018154. D. D. , A. M., V. T., P. B, R. M. and E. H. 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 for sample fabrication and traveling. Atomic force microscopy imaging was supported by the MRI program of the National Science Foundation under the award number 2018653.

Presenters

  • Deanna Diaz

    • California State University, Long Beach

Authors

  • Deanna Diaz

    • California State University, Long Beach

  • Anise E Mansour

    • California State University, Long Beach

  • Erin Henkhaus

    • California State University, Long Beach

  • Movindu Dissanayake

    • California State University, Long Beach

  • Vinh Tran

    • California State University, Long Beach

  • Kenta Kodama

    • California State University, Long Beach

  • Francisco Ramirez

    • California State University, Long Beach

  • Jacob Weber

    • California State University, Long Beach

  • Patrick T Barfield

    • California State University, Long Beach

  • Maya H Martinez

    • California State University, Long Beach

  • Ryan T Mizukami

    • California State University, Long Beach

  • Takashi Taniguchi

    • Kyoto Univ
    • National Institute for Materials Science
    • Research Center for Materials Nanoarchitectonics
    • Research Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Sciences
    • NIMS
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science
    • International Center for Materials Nanoarchitectonics, NIMS, Japan
    • International Center for Materials Nanoarchitectonics, Tsukuba
    • National Institue for Materials Science
    • Kyoto University
    • National Institute of Materials Science
    • International Center for Materials Nanoarchitectonics and National Institute for Materials Science

  • Kenji Watanabe

    • National Institute for Materials Science
    • NIMS
    • Research Center for Electronic and Optical Materials, National Institute for Materials Science
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science

  • Thomas Gredig

    • California State University, Long Beach

  • Claudia Ojeda-Aristizabal

    • California State University, Long Beach