Large-scale Monte Carlo study of a realistic lattice model for Ga1-xMnxAs

Yucel Yildirim, Gonzalo Alvarez, Adriana Moreo, Elbio Dagotto

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Mn-doped GaAs is studied with a real-space Hamiltonian on an fcc lattice that reproduces the valence bands of undoped GaAs. Large-scale Monte Carlo (MC) simulations on a Cray XT3, using up to a thousand nodes, were needed. Spin-orbit interaction and the random distribution of the Mn ions are considered. The hopping amplitudes are functions of the GaAs Luttinger parameters. At the realistic coupling J∼1.2eV the MC Curie temperature and magnetization curves agree with experiments for x=8.5% annealed samples. Mn-doped GaSb and GaP are also briefly discussed.

Original languageEnglish
Article number057207
JournalPhysical Review Letters
Volume99
Issue number5
DOIs
StatePublished - Aug 1 2007

Fingerprint

Dive into the research topics of 'Large-scale Monte Carlo study of a realistic lattice model for Ga1-xMnxAs'. Together they form a unique fingerprint.

Cite this