Transverse magneto-optical Kerr effect of Fe at the 2p excitation threshold |
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Authors: | D Knabben N Weber B Raab Th Koop FU Hillebrecht E Kisker GY Guo |
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Institution: | aInstitut für Angewandte Physik, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany;bDaresbury Laboratory, Warrington, Cheshire WA4 4AD, UK |
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Abstract: | The transverse magneto-optical Kerr effect (T-MOKE) was investigated for thin epitaxial Fe films grown on Ag(0 0 1) in the region of the 2p excitation threshold. The experimental reflectivity and asymmetry spectra are compared to those derived from the complex dielectric function tensor calculated by using the first-principles spin-polarized relativistic band theory. We found that the T-MOKE asymmetry in general is a mixture of both the real and imaginary parts of the off-diagonal element of the dielectric function tensor, depending sensitively on the relative magnitudes of real and imaginary parts of the diagonal element. For angles of incidence larger than about 5° the influence of the Ag-substrate is significant. The major features in experimental and calculated reflectivity and asymmetry spectra are in agreement. |
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Keywords: | PACS: 71 25 Pi 75 25 +z 75 50 Bb 78 20 Ls |
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