Ettema, A.R.H.F., deGroot, R.A., Haas, C. and Turner, Tracy (1992) The electronic structure of SnS deduced from photoelectron spectra and band structure calculations. Physical Review B, 46 (12). pp. 7363-7373. ISSN 1098-0121
Abstract

SnS is a layer compound with a phase transition from a high-temperature β phase to a low-temperature α phase with a lower symmetry. Ab initio band-structure calculations are presented for both phases. The calculations show that the charge distributions in the two phases are very similar. However, the band gap is much larger in the α phase. The calculations are used to discuss the chemical bonding in the α and the β phase. Energy-dependent photoelectron spectra, using synchrotron radiation, and angle-resolved photoelectron spectra were obtained for α-SnS. The energy versus wave-vector curves deduced from the spectra are in good agreement with the band-structure calculations. Photoemission from the top of the valence band shows a resonance and an interference effect at photon energies of 25–30 eV.

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