Magnetic control of an exciton-polariton condensate in a van der Waals magnet.

IF 38 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nature Materials Pub Date : 2026-10-08 DOI:10.1038/s41563-026-02751-y

Heng Zhang, Niloufar Nilforoushan, Christian Weidgans, Tobias Inzenhofer, Marlene Liebich, Josef Riepl, Julian Hirschmann, Imke Gronwald, Kseniia Mosina, Zdeněk Sofer, Ritaj Tyagi, Jan Wilhelm, Fabian Mooshammer, Florian Dirnberger, Rupert Huber

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引用次数: 0

Abstract

Quasiparticle condensates are among the most striking solid-state manifestations of quantum physics. Coupling macroscopic real-space wavefunctions to additional degrees of freedom, such as the electron spin, would add valuable control knobs for quantum applications. While creating spin-carrying superconducting condensates has attracted enormous attention, condensates of light-matter hybrids known as exciton-polaritons have lacked an analogous spin-based perspective. Here we demonstrate magnetically tunable exciton-polariton condensation in the van der Waals magnet CrSBr. Under photoexcitation, CrSBr microwires embedded in an optical cavity show the hallmarks of polariton condensation. Owing to the strong coupling between the spin order and excitonic correlation, the energy of the condensate can be tuned by up to 10.5 meV by an external magnetic field of 2 T. Our results establish CrSBr microcavities as a powerful platform for exploring magnetic control of polariton condensates and mark an essential step towards spin-controlled coherent quantum light sources.

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范德华磁体中激子-极化子凝聚体的磁控制。

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来源期刊

Nature Materials 工程技术-材料科学：综合

CiteScore

62.20

自引率

0.70%

发文量

221

审稿时长

3.2 months

期刊介绍： Nature Materials is a monthly multi-disciplinary journal aimed at bringing together cutting-edge research across the entire spectrum of materials science and engineering. It covers all applied and fundamental aspects of the synthesis/processing, structure/composition, properties, and performance of materials. The journal recognizes that materials research has an increasing impact on classical disciplines such as physics, chemistry, and biology. Additionally, Nature Materials provides a forum for the development of a common identity among materials scientists and encourages interdisciplinary collaboration. It takes an integrated and balanced approach to all areas of materials research, fostering the exchange of ideas between scientists involved in different disciplines. Nature Materials is an invaluable resource for scientists in academia and industry who are active in discovering and developing materials and materials-related concepts. It offers engaging and informative papers of exceptional significance and quality, with the aim of influencing the development of society in the future.