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Iowa State University

2001

Physics and Astronomy Publications

Linear muffin-tin

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Full-Text Articles in Physics

Optical Properties And Electronic Structure Of Mgausn, S. J. Lee, J. M. Park, T. A. Wiener, L. L. Miller, David W. Lynch Sep 2001

Optical Properties And Electronic Structure Of Mgausn, S. J. Lee, J. M. Park, T. A. Wiener, L. L. Miller, David W. Lynch

Physics and Astronomy Publications

The optical conductivity spectrum of single-crystal MgAuSn was measured by spectroscopic ellipsometry in the energy range 1.5–5.0 eV. The spectrum has a large peak at 2.9 eV and a small shoulder around 4.3 eV. The band structure, density of states, and interband contribution to the optical conductivity were calculated with the tight-binding linear muffin-tin orbital method in the atomic-sphere approximation. The intraband contribution to the optical conductivity was added using the Drude response fitted to the experimental data. The total theoretical spectrum, including the intraband contribution, agrees well with experimental data.