Terahertz electrodynamics of tunable graphene microcavities

ORAL

Abstract

VdW heterostructures host a wide range of gate-tunable topological and strongly correlated quantum phenomena that fall on the THz energy scale. Capturing the THz electrodynamics of these systems could provide a unique window into their ground-state physics. However, far-field THz techniques cannot operate on microstructured samples.



We present a generalizable platform for near-field on-chip THz spectroscopy that can access the electrodynamic response of gate-tunable vdW heterostructures from ~30 GHz - 1.2 THz (0.12 - 5 meV). Our results show that graphene heterostructures embedded in ultrafast circuitry act like microcavities, confining the electric field to excite coherent plasmon-polariton modes. We develop an analytical model to describe these cavity modes, which can be tuned by engineering the geometrical properties of the cavity, the dielectric environment, and the carrier density.



These results illustrate the potential for this technique to operate at millikelvin temperatures and strong magnetic fields, bringing THz spectroscopy into the realm traditionally reserved for quantum transport.

*Max Planck – New York City Center on Non-equilibrium Quantum PhenomenaSFB 925 -- Light induced dynamics and control of correlated quantum systemsHumboldt postdoctoral fellowshipMarie Skłodowska-Curie Actions fellowshipMax Planck Graduate Center for Quantum Materials

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Presenters

  • Gunda Kipp

    • Max Planck Institute for the Structure & Dynamics of Matter

Authors

  • Gunda Kipp

    • Max Planck Institute for the Structure & Dynamics of Matter

  • Hope M Bretscher

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for Structure and Dynamics of Matter

  • Marios H Michael

    • Max Planck for the Structure and Dynamics of Matter

  • Benedikt F Schulte

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for Structure and Dynamics of Matter

  • Dorothee Herrmann

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for Structure and Dynamics of Matter

  • Toru Matsuyama

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for Structure and Dynamics of Matter

  • Matthew W Day

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for Structure and Dynamics of Matter

  • Kateryna Kusyak

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for the Structure & Dynamics of Matter

  • Xinyu Li

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for Structure and Dynamics of Matter

  • Felix Sturm

    • Columbia University

  • Sivasruthi Kesavan

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for Structure and Dynamics of Matter

  • Jesse Hagelstein

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for Structure and Dynamics of Matter

  • Sara M Langner

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for Structure and Dynamcis of Matter

  • Yunfei Huang

    • Columbia university

  • José M Pizarro

    • Humboldt-Universität zu Berlin

  • 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

  • Tim Wehling

    • University of Hamburg
    • University Hamburg
    • Institute of Theoretical Physics, University of Hamburg, 22607 Hamburg, Germany
    • Universität Hamburg

  • Michael A Sentef

    • MPSD Hamburg
    • University of Bremen

  • Angel Rubio

    • Max Planck Institute for the Structure & Dynamics of Matter
    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for the Structure &
    • Max Planck Institute for the Structure & Dynamics of Matter; Center for Computational Quantum Physics, Flatiron Institute
    • Center for Computational Quantum Physics, Flatiron Institute
    • Max Planck Institute for the Structure and Dynamics of Matter - Flatiron Institute
    • Max Planck Institute for Structure and Dynamics of Matter

  • Dante M Kennes

    • RWTH Aachen University

  • Emmanuel Baudin

    • PSL University
    • Ecole Normale Supérieure de Paris

  • Guido Meier

    • Max Planck Institute for the Structure and Dynamics of Matter
    • Max Planck Institute for Structure and Dynamics of Matter

  • James W McIver

    • Max Planck Institute for the Structure &
    • Columbia University