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First-principles calculations of optical and magneto-optical properties of Ga1-xMnxAs and MnAs
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Materials Science.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Materials Science.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Materials Science.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Materials Science.
2009 (English)In: Physica. B, Condensed matter, ISSN 0921-4526, E-ISSN 1873-2135, Vol. 404, no 20, 3782-3788 p.Article in journal (Refereed) Published
Abstract [en]

We present a first-principles density-functional investigation of the optical and magneto-optical properties of MnGa1-xAs (with x = 0,0.0625, and 1) systems. Our calculated dielectric function, magneto-optical Kerr effect, and magnetic circular dichroism spectra agree reasonably well with existing experimental results. A comparison of the optical and magneto-optical spectra of MnAs in the naturally occurring hexagonal phase and in the cubic zinc-blende structure is made. The differences in the spectral properties of these two phases could aid detection of MnAs in the zinc-blende structure. (C) 2009 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2009. Vol. 404, no 20, 3782-3788 p.
Keyword [en]
Half-metallic ferromagnet, Diluted magnetic semiconductor (DMS), Magneto-optical Kerr effect (MOKE), Magnetic circular dichroism (MCD)
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-127431DOI: 10.1016/j.physb.2009.06.141ISI: 000271602500081OAI: oai:DiVA.org:uu-127431DiVA: diva2:330016
Available from: 2010-07-14 Created: 2010-07-13 Last updated: 2017-12-12Bibliographically approved

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Amft, MartinSanyal, BiplabOppeneer, Peter M.

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