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Observation of electronic modes in open cavity resonator

Author

Listed:
  • Hwanchul Jung

    (Pusan National University
    Pusan National University)

  • Dongsung T. Park

    (KAIST)

  • Seokyeong Lee

    (KAIST)

  • Uhjin Kim

    (Jeonbuk National University)

  • Chanuk Yang

    (Jeonbuk National University)

  • Jehyun Kim

    (Seoul National University)

  • V. Umansky

    (Weizmann Institute of Science)

  • Dohun Kim

    (Seoul National University)

  • H.-S. Sim

    (KAIST)

  • Yunchul Chung

    (Pusan National University
    Pusan National University)

  • Hyoungsoon Choi

    (KAIST
    KAIST)

  • Hyung Kook Choi

    (Jeonbuk National University)

Abstract

The resemblance between electrons and optical waves has strongly driven the advancement of mesoscopic physics, evidenced by the widespread use of terms such as fermion or electron optics. However, electron waves have yet to be understood in open cavity structures which have provided contemporary optics with rich insight towards non-Hermitian systems and complex interactions between resonance modes. Here, we report the realization of an open cavity resonator in a two-dimensional electronic system. We studied the resonant electron modes within the cavity and resolved the signatures of longitudinal and transverse quantization, showing that the modes are robust despite the cavity being highly coupled to the open background continuum. The transverse modes were investigated by applying a controlled deformation to the cavity, and their spatial distributions were further analyzed using magnetoconductance measurements and numerical simulation. These results lay the groundwork to exploring matter waves in the context of modern optical frameworks.

Suggested Citation

  • Hwanchul Jung & Dongsung T. Park & Seokyeong Lee & Uhjin Kim & Chanuk Yang & Jehyun Kim & V. Umansky & Dohun Kim & H.-S. Sim & Yunchul Chung & Hyoungsoon Choi & Hyung Kook Choi, 2023. "Observation of electronic modes in open cavity resonator," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36012-2
    DOI: 10.1038/s41467-023-36012-2
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    References listed on IDEAS

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