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Influence of the magnetic transition on the optical properties of CrBr3
Authors:L. Nosenzo  E. Reguzzoni  G. Samoggia  G. Guizzetti  I. Pollini
Affiliation:Istituto di Fisica dell''Università di Pavia, Pavia, Italy and Gruppo Nazionale di Struttura della Materia del CNR, Italy;Istituto di Fisica dell''Università di Milano, Milano, Italy and Gruppo Nazionale di Struttura della Materia del CNR, Italy
Abstract:Reflectance and thermoreflectance spectra of the magnetic insulator CrBr3 have been measured in the para- and ferromagnetic phases. Below the Curie temperature the structure at ? 7.30 eV splits into two components separated by ? 0.27 eV. This doublet is ascribed to an optical excitation involving the exchange split conduction band.
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