Urbach Rule in MnGa2Se4 Single Crystals Upon Optical Absorption

Аннотация

The Urbach rule in MnGa₂Se₄ single crystals is studied. It is found that the long-wavelength absorption tail obeys the Urbach rule at photon energies in the range 2.1–2.2 eV. It is shown that a strong electron–phonon interaction exists in MnGa₂Se₄ single crystals.