Relativistic calculations of the magneto-optical Kerr spectra in (001) and (111) US, USe, and UTe

Kraft, Thomas; Oppeneer, Peter M.; Antonov, V. N.; Eschrig, H.

doi:10.1103/physrevb.52.3561

Cited by 78 publications

(49 citation statements)

References 41 publications

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“…Moreover, the calculated and experimental MOKE spectra correspond nicely, wherefore it can be concluded that the present LSDA band approach can be used for rare-earth intermetallics. But this has not been found to be the general rule [43].…”

Section: Gdfe2mentioning

confidence: 99%

First-Principles Theory and Predictions of the Kerr Effect

Oppeneer¹,

Antonov

Yaresko

et al. 1996

J. Magn. Soc. Jpn.

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-The present status of theoretical understanding ofthe magneto-optical Ken effect (MOKE) is reviewed. The theoretical research on MOKE has emerged from its initial stage, in which elementary ferromagnetic materials, like Fe and Ni, could be described, to a powerful first-principles electronic structure theory with which directly 'materials engineering' can be made. To illustrate this, we investigate the MOKE spectra of the following materials, which were selected because of their relevance for magneto-optical (MO) recording applications: (a) MnBi and derived compounds, (b) the natural layer systems FePt, CoPd, and CoPt, and related multilayers, (c) XPts compounds with X=V, Cr, Mn, Fe, and Co, (cl) ternary compounds related to PtMnSb, and (e) GdFe2. The ab initio calcula.ted MOKE spectra are compared to experimental spectra, if available. We predict several materials that could be promising for MO recording. We also propose a set of guidelines for the future predictions of materials having suitable MO properties.

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Section: Gdfe2mentioning

confidence: 99%

First-Principles Theory and Predictions of the Kerr Effect

Oppeneer¹,

Antonov

Yaresko

et al. 1996

J. Magn. Soc. Jpn.

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“…There are quite a few first-principle calculations of the MO spectra of uranium compounds [17][18][19][20][21][22]. The MO spectra of such compounds as UAsSe [19] and U 3 P 4 [20,22] are well described in the LSDA, and we can conclude that they have at least partially itinerant electron behavior.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure and magneto-optical Kerr effect in the compound UCuP2

Horpynyuk

Nemoshkalenko

Antonov

et al. 2002

Low Temperature Physics

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The optical and magneto-optical (MO) spectra of the ternary compound UCuP 2 are investigated from first principles, using the fully relativistic Dirac linear-muffin-tin-orbital band structure method and density-functional theory in the local spin-density approximation. Within a band-like description of the 5f electrons, good agreement with the measured MO spectra is obtained. The origin of the Kerr rotation in the compound is examined.

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“…Such rewriting of the DKS equation can be achieved in two ways. The small component of the wavefunction |ψ − can be eliminated exactly, leading to an equation which is fully equivalent to the DKS equation, but for the large component |ψ + only [43]. This equation can subsequently be expanded in orders of 1/c 2 .…”

Section: Theory a The Dirac-kohn-sham Equationmentioning

confidence: 99%

“…Alternatively, one can use the Foldy-Wouthuysen (FW) transformation approach [42,44], however, it needs to be extended to the case where an exchange field B xc is present, which was not done before. We note that apart from the exact transformation of Kraft et al [43], a Green function technique was applied by Crépieux and Bruno [45] to obtain the semirelativistic Hamiltonian. However, they did not start from the DKS Hamiltonian as given in Eq.…”

Section: Theory a The Dirac-kohn-sham Equationmentioning

confidence: 99%

Ab initioinvestigation of light-induced relativistic spin-flip effects in magneto-optics

et al. 2015

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Excitation of a metallic ferromagnet such as Ni with an intensive femtosecond laser pulse causes an ultrafast demagnetization within approximately 300 fs. It was proposed that the ultrafast demagnetization measured in femtosecond magneto-optical experiments could be due to relativistic light-induced processes. We perform an ab initio investigation of the influence of relativistic effects on the magneto-optical response of Ni. To this end, we develop, first, a response theory formulation of the additional appearing ultra-relativistic terms in the Foldy-Wouthuysen transformed Dirac Hamiltonian due to the electromagnetic field, and, second, compute the influence of relativistic light-induced spin-flip transitions on the magneto-optics. Our ab initio calculations of relativistic spin-flip optical excitations predict that these can give only a very small contribution (≤ 0.1%) to the laser-induced magnetization change in Ni.

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Relativistic calculations of the magneto-optical Kerr spectra in (001) and (111) US, USe, and UTe

Cited by 78 publications

References 41 publications

First-Principles Theory and Predictions of the Kerr Effect

First-Principles Theory and Predictions of the Kerr Effect

Electronic structure and magneto-optical Kerr effect in the compound UCuP2

Ab initioinvestigation of light-induced relativistic spin-flip effects in magneto-optics

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