2013/08/27 by N. Tesarova, N. Tesařová, T. Ostatnicky +27 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Birefringence #Blueshift #Chemistry #Circular dichroism #Condensed matter physics #Crystallography #Curie temperature #Dichroism #Ferromagnetism #Linear dichroism #Magnetic and transport properties of perovskites and related materials #Magnetic circular dichroism #Magnetic field #Magnetic properties of thin films #Magnetization #Materials science #Optics #Physics #Polarization (electrochemistry) #Spectral line #ZnO doping and properties #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.89.085203
18 pages
arxiv created 2013/08/27 · openalex publication_date 2014/02/14 · arxiv updated 2015/06/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Magnetic linear dichroism and birefringence in (Ga,Mn)As epitaxial layers is investigated by measuring the polarization plane rotation of reflected linearly polarized light when magnetization lies in the plane of the sample. We report on the spectral dependence of the rotation and ellipticity angles in a broad energy range of 0.12--2.7\phantom\rule4pt0exeV for a series of optimized samples covering a wide range on Mn dopings and Curie temperatures and find a clear blueshift of the dominant peak at energy exceeding the host material band gap. These results are discussed within the framework of the k\ifmmode⋅\else\textperiodcentered\fip and mean-field kinetic-exchange model of the (Ga,Mn)As band structure. We infer that disorder-induced nondirect transitions significantly influence magneto-optical properties of (Ga,Mn)As.