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Magneto-optics in a van der Waals magnet tuned by self-hybridized polaritons

Author

Listed:
  • Florian Dirnberger

    (City College of New York)

  • Jiamin Quan

    (City University of New York
    CUNY Advanced Science Research Center
    City College of the City University of New York)

  • Rezlind Bushati

    (City College of New York
    City University of New York)

  • Geoffrey M. Diederich

    (University of Washington
    University of Washington)

  • Matthias Florian

    (University of Michigan)

  • Julian Klein

    (Massachusetts Institute of Technology)

  • Kseniia Mosina

    (University of Chemistry and Technology Prague)

  • Zdenek Sofer

    (University of Chemistry and Technology Prague)

  • Xiaodong Xu

    (University of Washington)

  • Akashdeep Kamra

    (Universidad Autónoma de Madrid)

  • Francisco J. García-Vidal

    (Universidad Autónoma de Madrid)

  • Andrea Alù

    (City University of New York
    CUNY Advanced Science Research Center
    City College of the City University of New York)

  • Vinod M. Menon

    (City College of New York
    City University of New York)

Abstract

Controlling quantum materials with light is of fundamental and technological importance. By utilizing the strong coupling of light and matter in optical cavities1–3, recent studies were able to modify some of their most defining features4–6. Here we study the magneto-optical properties of a van der Waals magnet that supports strong coupling of photons and excitons even in the absence of external cavity mirrors. In this material—the layered magnetic semiconductor CrSBr—emergent light–matter hybrids called polaritons are shown to substantially increase the spectral bandwidth of correlations between the magnetic, electronic and optical properties, enabling largely tunable optical responses to applied magnetic fields and magnons. Our results highlight the importance of exciton–photon self-hybridization in van der Waals magnets and motivate novel directions for the manipulation of quantum material properties by strong light–matter coupling.

Suggested Citation

  • Florian Dirnberger & Jiamin Quan & Rezlind Bushati & Geoffrey M. Diederich & Matthias Florian & Julian Klein & Kseniia Mosina & Zdenek Sofer & Xiaodong Xu & Akashdeep Kamra & Francisco J. García-Vidal, 2023. "Magneto-optics in a van der Waals magnet tuned by self-hybridized polaritons," Nature, Nature, vol. 620(7974), pages 533-537, August.
    • Handle: RePEc:nat:nature:v:620:y:2023:i:7974:d:10.1038_s41586-023-06275-2
    DOI: 10.1038/s41586-023-06275-2
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    Cited by:

    1. Francesco L. Ruta & Shuai Zhang & Yinming Shao & Samuel L. Moore & Swagata Acharya & Zhiyuan Sun & Siyuan Qiu & Johannes Geurs & Brian S. Y. Kim & Matthew Fu & Daniel G. Chica & Dimitar Pashov & Xiaod, 2023. "Hyperbolic exciton polaritons in a van der Waals magnet," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Farsane Tabataba-Vakili & Huy P. G. Nguyen & Anna Rupp & Kseniia Mosina & Anastasios Papavasileiou & Kenji Watanabe & Takashi Taniguchi & Patrick Maletinsky & Mikhail M. Glazov & Zdenek Sofer & Anvar , 2024. "Doping-control of excitons and magnetism in few-layer CrSBr," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    3. Märta A. Tschudin & David A. Broadway & Patrick Siegwolf & Carolin Schrader & Evan J. Telford & Boris Gross & Jordan Cox & Adrien E. E. Dubois & Daniel G. Chica & Ricardo Rama-Eiroa & Elton J. G. Sant, 2024. "Imaging nanomagnetism and magnetic phase transitions in atomically thin CrSBr," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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