<i>Ab initio</i>calculated magneto-optical Kerr effect of ferromagnetic metals: Fe and Ni

Oppeneer, Peter M.; Maurer, Thomas; Sticht, J.; Kübler, J.

doi:10.1103/physrevb.45.10924

Cited by 280 publications

(223 citation statements)

References 45 publications

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“…Those quantities include contributions from both the diagonal components of , which are even in M, and the off-diagonal components, which are odd in M [43]. Only the latter are of magneto-optical origin and contribute to the pure AP-MOKE, which is why we need to extract their contribution to θ tot and ε tot .…”

Section: -2mentioning

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: -2mentioning

confidence: 99%

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

2014

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“…͑1͒ is done separately over the muffin-tin and the interstitial regions. The integration over the muffin-tin spheres is done in a way similar to the procedures used by Oppeneer 18 and Gasche. 15 However, their calculations utilized the atomic sphere approximation ͑ASA͒.…”

Section: Calculation Of the Dielectric Functionmentioning

confidence: 99%

Electronic and optical properties of lead iodide

Ahuja

Arwin

Silva

et al. 2002

Journal of Applied Physics

101

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The electronic properties and the optical absorption of lead iodide (PbI 2 ) have been investigated experimentally by means of optical absorption and spectroscopic ellipsometry, and theoretically by a full-potential linear muffin-tin-orbital method. PbI 2 has been recognized as a very promising detector material with a large technological applicability. Its band-gap energy as a function of temperature has also been measured by optical absorption. The temperature dependence has been fitted by two different relations, and a discussion of these fittings is given.

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“…We use the augmented spherical wave (ASW) method (see Ref. 23) which has already provided a very efficient relativistic bandstructure framework for accurate calculations of linear response functions, such as the conductivity tensor [24,25]. The evaluation of the momentum operator matrix elements p nl (k) and details of the k-space integration method can be found in Refs.…”

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confidence: 99%

“…The evaluation of the momentum operator matrix elements p nl (k) and details of the k-space integration method can be found in Refs. [25][26][27]. The linewidth Γ is here assumed to be state independent.…”

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confidence: 99%

Ab InitioTheory of Coherent Laser-Induced Magnetization in Metals

et al. 2016

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We present the first materials specific ab initio theory of the magnetization induced by circularly polarized laser light in metals. Our calculations are based on non-linear density matrix theory and include the effect of absorption. We show that the induced magnetization, commonly referred to as inverse Faraday effect, is strongly materials and frequency dependent, and demonstrate the existence of both spin and orbital induced magnetizations which exhibit a surprisingly different behavior. We show that for nonmagnetic metals (as Cu, Au, Pd, Pt) and antiferromagnetic metals the induced magnetization is antisymmetric in the light's helicity, whereas for ferromagnetic metals (Fe, Co, Ni, FePt) the imparted magnetization is only asymmetric in the helicity. We compute effective optomagnetic fields that correspond to the induced magnetizations and provide guidelines for achieving all-optical helicity-dependent switching.PACS numbers: 78.20. Ls, 75.70.Tj, 75.60.Jk All-optical helicity-dependent magnetization switching has recently emerged as a promising way to manipulate and ultimately control the magnetization in a magnetic material using ultrashort optical laser pulses [1][2][3][4][5][6][7]. As femtosecond optical laser pulses are the shortest stimuli known to mankind, all-optical helicity-dependent switching offers novel options to achieve magnetization reversal at a hitherto unprecedented speed. The action of a circularly polarized laser pulse on the magnetization of a material was at first observed for an antiferromagnetic 3d-metal oxide [1] and later magnetization reversal was demonstrated in a ferrimagnetic rare-earth transitionmetal alloy [2,8]. Importantly, recent work demonstrated that all-optical helicity-dependent switching is not limited to a special class of materials, but can be achieved in a broader variety of material classes, including metallic multilayers, synthetic ferrimagnets [6], and even ferromagnets such as FePt [7], which is the prime candidate material for future ultradense magnetic recording [9].While these discoveries exemplify that ultrafast magnetization reversal driven by circularly polarized laser pulses could soon revolutionize magnetic recording its underlying physical mechanism is poorly understood. The influence of the circularly polarized laser pulse has been attributed to the inverse Faraday effect (IFE) [1][2][3]7], which was discovered fifty years ago [10]. The IFE is an optomagnetic counterpart of the magneto-optical Faraday effect, that is, the circularly polarized laser light imparts a magnetization in the material which exerts a torque on the pre-existing magnetization and assists the magnetization switching. However, although various models for the IFE have been proposed [11][12][13][14][15][16][17] there does as yet not exist any knowledge as to how the induced magnetization, or optomagnetic field arises, and even less is known about the materials dependence of the IFE. As materials specific theory is lacking it is neither known for which materials large effects are pr...

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Ab initiocalculated magneto-optical Kerr effect of ferromagnetic metals: Fe and Ni

Cited by 280 publications

References 45 publications

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

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

Electronic and optical properties of lead iodide

Ab InitioTheory of Coherent Laser-Induced Magnetization in Metals

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