We report on a theoretical study of the electronic, optical, and magneto-optical properties of digital ferromagnetic heterostructures based on Mn delta-doped GaAs. We consider different structures corresponding to Mn contents within the range 12%-50% and we study how the system changes as a function of the doping concentration. Our first-principles approach includes the spin-orbit interaction in a fully relativistic pseudopotential scheme and the local-field effect in the description of the optical absorption. We show that Mn d-doped GaAs shares many properties with the uniformly doped Ga1-xMnxAs system, i.e., half-metallicity, similar absorption spectra, and moderate Kerr rotation angles in the visible spectral region.
Ab initio electronic structure, optical, and magneto-optical properties of MnGaAs digital ferromagnetic heterostructures / P. Rosa, D. Sangalli, G. Onida, A. Debernardi. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 91:7(2015 Feb 24), pp. 075207.1-075207.9.
Titolo: | Ab initio electronic structure, optical, and magneto-optical properties of MnGaAs digital ferromagnetic heterostructures |
Autori: | ROSA, PATRIZIA (Primo) ONIDA, GIOVANNI (Penultimo) |
Parole Chiave: | Magneto-Optical Effects; Semiconductor heterostructures; Spin-Orbit effects |
Settore Scientifico Disciplinare: | Settore FIS/03 - Fisica della Materia |
Data di pubblicazione: | 24-feb-2015 |
Rivista: | |
Tipologia: | Article (author) |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevB.91.075207 |
Appare nelle tipologie: | 01 - Articolo su periodico |
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