Resistively-detected microwave resonance as a spin probe in graphene moiré systems

ORAL

Abstract

In a strongly correlated system, collective excitations reveal vital information regarding the electronic order of the underlying ground state. A recent report demonstrated a resisitively-detected electron spin resonance (RD-ESR) technique to directly observe collective modes in the form of microwave-induced resonance near half filling of the moiré flatband [1]. The frequency-magnetic field dependence of these resonance modes enabled the extraction of key parameters such as intervalley exchange interaction and spin stiffness. Furthermore, the onset of robust resonance response coinciding with the spontaneous flavor polarization at half moiré filling indicates that the generation and detection of the microwave resonance relies on the strong correlation of the flat band. Here, we apply the RD-ESR technique to twisted trilayer graphene systems that exhibit both superconducting and diode-like nonreciprocal transport response [2]. The ability to rectify the spin characteristics of systems with valley-polarized isospin order represents unlocking a comprehensive spin-valley picture of the electronic order of the ground state.



[1] E. Morissette, J.X. Lin, D. Sun, et al., arXiv:2206.08354 (2022)

[2] J.X. Lin, P. Siriviboon, H.D. Scammel, et al., Nature Physics 18 1221-1227 (2022)

[3] N.J. Zhang, J.X. Lin, Y. Wang, et al., arXiv: 2209.12964 (2022)

*E.M. acknowledges funding from the National Defense Science and Engineering Graduate (NDSEG) Fellowship. J.-X.L. and J.I.A.L. acknowledge funding from NSF DMR-2143384. J.P. and L.Z. acknowledge support from the Cowen Family Endowment at MSU. K.W. and T.T. acknowledge support from the EMEXT Element Strategy Initiative to Form Core Research Center, Grant Number JPMXP0112101001 and the CREST(JPMJCR15F3), JST. Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the DOE's National Nuclear Security Administration under contract DE-NA0003525. This work was funded, in part, by the Laboratory Directed Research and Development Program and performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science.

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Publication: E. Morissette, J.X. Lin, D. Sun, et al., arXiv:2206.08354 (2022)

Presenters

  • Erin Morissette

    • Department of Physics, Brown University

Authors

  • Erin Morissette

    • Department of Physics, Brown University

  • Jiang-Xiazi Lin

    • Brown University

  • Dihao Sun

    • Columbia University

  • Liangji Zhang

    • Michigan State University

  • Song Liu

    • Columbia University

  • Daniel A Rhodes

    • Columbia Univ

  • 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

  • James C Hone

    • Columbia University

  • Johannes Pollanen

    • Michigan State University

  • Mathias S Scheurer

    • Univ of Innsbruck
    • University of Innsbruck

  • Michael P Lilly

    • Sandia National Laboratories

  • Andrew M Mounce

    • Sandia National Laboratories

  • Jia Li

    • Brown University