Optical properties and electronic structure of MgAuSn

S. J. Lee, J. M. Park, T. A. Wiener, L. L. Miller, D. W. Lynch
2001 Physical Review B (Condensed Matter)  
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
more » ... ng the Drude response fitted to the experimental data. The total theoretical spectrum, including the intraband contribution, agrees well with experimental data.
doi:10.1103/physrevb.64.125112 fatcat:gtkprffp6rhohf5k4i73jqhwey