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Excitonic optical absorption in strained monolayer CrSBr

Maurício F. C. Martins Quintela1,2,*, Guilherme J. Inacio2, Miguel Sá2, Giovanni Cistaro3, Alberto M. Ruiz4, José J. Baldoví4, Juan J. Palacios1,2,5, and Antonio Picón6,†

  • *Contact author: mfcmquintela@gmail.com
  • †Contact author: antonio.picon@csic.es
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Phys. Rev. Research 8, 013279 – Published 12 March, 2026

DOI: https://doi.org/10.1103/8pdd-5md4

Abstract

Recently, the isolation of two-dimensional magnetic materials has opened several avenues for possible applications in spintronics. Among these materials, CrSBr has sparked interest due to its relatively high Curie temperature, highly anisotropic lattice structure, and high structural stability. These properties run along with others shared by any atomically thin material such as its outstanding deformation capacity and a strong optical response dominated by excitonic effects. The combination of these properties provides a fairly uncharted playground to explore the interplay between magnetism and optical excitations. Here, we focus our attention on the theoretical optical response of CrSBr under several distinct strain configurations, analyzing the resulting changes to both the excitonic peaks and overall shape of the diagonal components of the linear conductivity tensor.

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Phys. Rev. Research 8, 013279– Published 12 March, 2026
  • Received 15 October 2025
  • Accepted 6 February 2026
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