2010/10/31 by Akash Chakraborty, R. Bouzerar, Richard Bouzerar +2 · 8 citations
Materials Science · Physics and Astronomy · #Ab initio #Condensed matter physics #Curie #Curie temperature #Density of states #Doping #Ferromagnetism #Heisenberg model #Magnetic and transport properties of perovskites and related materials #Magnetic semiconductor #Magnon #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Spin wave #Thermodynamics #ZnO doping and properties #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1140/epjb/e2011-20320-x
published in The European Physical Journal B 81(4), 405-409 (Springer Science+Business Media) · 5 pages, 5 figures, Text and some figures revised to match the accepted version
openalex publication_date 2011/06/01 · arxiv created 2011/11/18 · arxiv updated 2011/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We provide a quantitative theoretical model study of the dynamical magnetic properties of optimally annealed Ga1-xMnxAs. This model has already been shown to reproduce accurately the Curie temperatures for Ga1-xMnxAs. Here we show that the calculated spin stiffness are in excellent agreement with those which were obtained from ab-initio based studies. In addition, an overall good agreement is also found with available experimental data. We have also evaluated the magnon density of states and the typical density of states from which the "mobility edge", separating the extended from localized magnon states, was determined. The power of the model lies in its ability to be generalized for a broad class of diluted magnetic semiconductor materials, thus it bridges the gap between first principle calculations and model based studies.