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<p>Emerging two-dimensional magnetic semiconductors represent transformative platforms to explore magneto-optics and opto-spintronic applications. Though two-dimensional opto-spintronics has attracted tremendous research efforts in spin-dependent photodetectors and non-volatile memory components, the realization of one core application - spin-modulated light-emitting device - remains elusive so far. Here, we successfully realize prototype spin-modulated light-emitting device integrated with a two-dimensional semiconducting magnet chromium sulfide bromide, demonstrating considerable electroluminescence down to bilayers. Intriguingly, it's discovered to be directly manipulated by spin-flip and spin-canting transitions. Notably, the intrinsic carrier-tunable interlayer magnetic coupling in chromium sulfide bromide enables electroluminescence to actively amplify magnetic hysteresis (via spin-flip) and continuously tune magnetic order (via spin-canting) with robust anisotropy, establishing a connection between carrier injection, magnetic phase transitions, and optical emission. The prototype demonstration of spin-modulated light-emitting device establishes an indispensable scheme of opto-spintronic devices leveraging two-dimensional spin transitions and strong excitonic effects, presenting a critical step towards integrated two-dimensional opto-spintronics.</p>

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Spin-transition modulated light-emitting devices in a 2D magnet

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月8日

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  • Fanglu Qin,
  • Haiyang Liu,
  • Aosai Yang,
  • Yilin Liu,
  • Xuanji Wang,
  • Yue Sun,
  • Xinyi Zhou,
  • Zdenek Sofer,
  • Jiayuan Zhou,
  • Xue Liu,
  • Sheng Liu,
  • Vanessa Li Zhang,
  • Xiaoze Liu,
  • Weibo Gao,
  • Ting Yu

摘要

Emerging two-dimensional magnetic semiconductors represent transformative platforms to explore magneto-optics and opto-spintronic applications. Though two-dimensional opto-spintronics has attracted tremendous research efforts in spin-dependent photodetectors and non-volatile memory components, the realization of one core application - spin-modulated light-emitting device - remains elusive so far. Here, we successfully realize prototype spin-modulated light-emitting device integrated with a two-dimensional semiconducting magnet chromium sulfide bromide, demonstrating considerable electroluminescence down to bilayers. Intriguingly, it's discovered to be directly manipulated by spin-flip and spin-canting transitions. Notably, the intrinsic carrier-tunable interlayer magnetic coupling in chromium sulfide bromide enables electroluminescence to actively amplify magnetic hysteresis (via spin-flip) and continuously tune magnetic order (via spin-canting) with robust anisotropy, establishing a connection between carrier injection, magnetic phase transitions, and optical emission. The prototype demonstration of spin-modulated light-emitting device establishes an indispensable scheme of opto-spintronic devices leveraging two-dimensional spin transitions and strong excitonic effects, presenting a critical step towards integrated two-dimensional opto-spintronics.