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Updated: Jun 9, 2025

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
Published on: December 3, 2013
Magneto-optical properties of heavily Fe-doped GaAs: a density functional approach
J Zarpellon1,2, D H Mosca1, J Varalda1
1Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, CEP 81531-990, Curitiba, Paraná, Brazil. juliana.zarpellon@ufpr.br.
Abstract:
The magneto-optical properties of heavily iron-doped GaAs are investigated. Complex permittivity, optical conductivity and absorption coefficients are mainly discussed using spin-polarized electronic band structures close to the Fermi energy level. Furthermore, prominent magneto-optical properties in visible light and ultraviolet regions, including magnetic circular dichroism as well as complex Kerr and Faraday rotation angles, are presented and discussed. A density functional approach corroborated by some experimental results indicates that GaAs with 25% Fe dopants either in As or Ga sites is a promising ferromagnetic material and a useful platform for optoelectronic and spintronic device applications.
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