An alternative approach for magneto-optic calculations involving layered media

Heim, K. R.; Scheinfein, M. R.

doi:10.1016/0304-8853(95)00561-7

Cited by 16 publications

(5 citation statements)

References 13 publications

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“…A general formulation of the propagation of electromagnetic plane waves of arbitrary polarization in multilayered media requires the use of (4ϫ4) dynamic matrices. 28 Computer simulations have been performed that include both first and second-order magnetooptic effects. 29 In general, most of the emphasis in the theoretical developments of magneto-optical effects in multilayers has been set in the study of the longitudinal and polar Kerr effects.…”

Section: Introductionmentioning

confidence: 99%

Magneto-optical transverse Kerr effect in multilayers

et al. 2001

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We present detailed theoretical and experimental analysis of the magneto-optic transverse Kerr effect in magnetic multilayers. The theoretical model is based upon a phenomenological permittivity tensor. From the general result, suitable only for numerical calculations, we derive several approximate analytical expressions in order to make a qualitative discussion. The theoretical predictions are compared with experimental results in Y/Co bilayers, and the good agreement found allows for an accurate determination of the magneto-optical constants of the material. Then, the theoretical model is applied to make a detailed study of interface magnetism in Y 1Ϫx Co x alloys, and to perform numerical simulations in Co/Cu and Fe/Cu multilayers. The results in multilayers highlight the complex behavior of the magneto-optic transverse Kerr effect, in which the contributions of the individual layers are never strictly additive. This nonlinearity is found to be strongly dependent on the 3d magnetic metal present and could be used to probe the alignment of the layers even in a configuration of vanishing magnetic moment.

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Section: Introductionmentioning

confidence: 99%

Magneto-optical transverse Kerr effect in multilayers

et al. 2001

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“…Quantitatively complete versions of linear optical transport that include Faraday rotation commonly use a 4 × 4 transfer matrix formalism in which the off-diagonal matrix elements provide coupling between perpendicular polarization states [28,46] in each layer. Although this approach is wholly satisfactory as a quantitative method connecting the microstructure of the layered system to the overall optical properties, we suggest that it obscures the following simple physical narrative for the modulations of the magneto-optical rotation across the reflection stop band and at band defects.…”

Section: B Application Of Theorymentioning

confidence: 99%

Role of group velocity delay in Faraday rotation in a multilayer polymer lattice

et al. 2012

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We measure and model the spectral dependence of Faraday rotation in one-dimensional lattice structures composed of co-extruded alternating polymer layers of polymethylmethacrylate and polystyrene. We develop a theory that shows that the net Faraday rotation in a symmetric multilayer system is determined not by the total thickness of the constituent materials but by the time spent in each constituent material as measured by the overall group velocity delay of the structure and the relative energy distribution per material. We compare measured and computed Faraday rotation spectra for these films to theoretical predictions, taking into account ellipticity as well as layer thickness variations and finite spectral width detection. To measure rotations of these thin, nonmagnetic, weak Faraday rotators, we constructed and optimized an apparatus capable of measuring broadband Faraday rotation spectra at 0.001°resolution for rotation angles as small as 0.002°.

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“…The optical and magneto-optical behavior of the multilayers were simulated using the theory of magneto-optic scattering in thin films [4]. The wave equation for the fields representing a p-polarized light is solved for each layer, where the magnetic layer is described by a non-diagonal permittivity tensor allowing for the magneto-optical effects.…”

Section: Optimization Of the Tmoke Responsementioning

confidence: 99%