Ab initio electronic structure, optical, and magneto-optical properties of MnGaAs digital ferromagnetic heterostructures
Articolo
Data di Pubblicazione:
2015
Citazione:
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. [10.1103/PhysRevB.91.075207]
Abstract:
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.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Magneto-Optical Effects; Semiconductor heterostructures; Spin-Orbit effects
Elenco autori:
P. Rosa, D. Sangalli, G. Onida, A. Debernardi
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