Abstract
The authors report the results of a fully relativistic band-structure calculation made using the KKR method for SmTe with the NaCl structure in the low-pressure phase. The exchange parameter was obtained using the free-electron approximation scaled by the exchange parameter alpha . They have solved the full Dirac equation for the interior of the muffin-tin spheres and the energies were evaluated at several symmetry points and other general points in the 1/48 wedge of the FCC Brillouin zone. The energy band indicates a gap throughout the whole BZ with excited f-type bands located below the d-type conduction band, and the indirect band gap determined by the band structure for the Gamma to X direction to be 0.67 eV in good agreement with the experimental value of 0.63 eV.
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