Materials2026-01-172 minarXiv:2601.12047expressElectron Spin Sings in a Magnetic FieldA laser beam hits a shiny crystal, and comes back different: slightly shifted in color, with a different polarization. In a magnetic field, this transformation of light becomes especially noticeable.Ina V. Kalitukha·Victor F. Sapega·Dmitri R. Yakovlev·Dennis Kudlacik·Damien Canneson·Yury G. Kusrayev·Anna V. Rodina·Manfred BayerWolfgang PauliJames Clerk MaxwellPaul Diracspinsynchrotron radiationexcitonfermionspin foam👍👎☆SimplePopularAdvanced