Theory of the Anisotropic Magneto-Optical Kerr Effect in Artificial FeAu and MnAu and in XAu&lt;sub&gt;4&lt;/sub&gt; (X=V, Cr, Mn) Compounds

Oppeneer, Peter M.; Galanakis, I.; James, P.; Eriksson, Olle; Ravindran, P.

doi:10.3379/jmsjmag.23.s1_21

Cited by 6 publications

(9 citation statements)

References 48 publications

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“…We choose the latter description to simplify the derivation of an expression for AP-MOKE. For the present Fe/GaAs(001) model system, with M oriented along z, the complex dielectric tensor is of the form [37][38][39]…”

Section: Methodsmentioning

confidence: 99%

Anisotropic optical properties of Fe/GaAs(001) nanolayers from first principles

2014

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We investigate the anisotropy of the optical properties of thin Fe films on GaAs(001) from first-principles calculations. Both intrinsic and magnetization-induced anisotropy are covered by studying the system in the presence of spin-orbit coupling and external magnetic fields. We use the linearized augmented plane wave method, as implemented in the WIEN2K density functional theory code, to show that the C 2v symmetric anisotropy of the spin-orbit coupling fields at the Fe/GaAs(001) interface manifests itself in the corresponding anisotropy of the optical conductivity and the polar magneto-optical Kerr effect. While their magnetization-induced anisotropy is negligible, the intrinsic anisotropy of the optical properties is significant and reflects the underlying C 2v symmetry of the Fe/GaAs(001) interface. This suggests that the effects of anisotropic spin-orbit coupling fields in experimentally relevant Fe/GaAs(001) slabs can be studied by purely optical means.

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Section: Methodsmentioning

confidence: 99%

Anisotropic optical properties of Fe/GaAs(001) nanolayers from first principles

2014

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“…Since VAu 4 is peculiar in the sense that it is a ferromagnet that is constructed from nonmagnetic elements, attention has previously been paid to it, and theoretical first-principles calculations of the spin moments have been carried out before. [15][16][17] The present first-principles calculations were made using both a full-potential linear muffin-tin orbital ͑LMTO͒ method 18 and the augmented-spherical-wave ͑ASW͒ method. 19 In our calculations we used the experimental lattice parameters for VAu 4 , which are aϭ6.382 Å and c ϭ3.981 Å.…”

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confidence: 99%

Sign reversal of the orbital moment via ligand states

et al. 2001

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It is demonstrated that the coupling between spin and orbital moments in magnetic systems may-for certain materials-be reversed from antiparallel to parallel, via the influence of ligand states. This is exemplified by first-principles calculations for an intermetallic compound VAu 4 , but the effect may be found also in other classes of materials. From a computational analysis of the influence of the ligand states, and from an expression based on perturbation theory, we show that ligand states, that traditionally are known only to quench the orbital moment, may produce anomalous orbital moments that violate Hunds third rule.

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“…The Curie temperature (T c ) of an amorphous RE-TM film is an important parameter for its use in MO recording [17,18]. Normally, the T c should be within the range 200-300 1C.…”

Section: Resultsmentioning

confidence: 99%