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Photoelectron spectra of GeS, GeSe, SnS and SnSe and their relation to structural trends and phase transitions within the average-valence-<5> compounds

Фотоэлектронные спектры GeS, GeSe, SnS и SnSe и их связь со сруктурными тенденциями и фазовыми переходами в соединениях со средней валентностью <5>

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Il Nuovo Cimento B (1971-1996)

Summary

Photoelectron spectra of GeS, GeSe, SnS and SnSe are presented. Ionicities of these and other IV–VI compounds are derived from the splitting of the valences-bands and from the interatomic distances. These ionicities can account for structural trends and phase transitions within the family of average-valence-<5> compounds.

Riassunto

Si presentano gli spettri di fotoemissione del GeS, GeSe, SnS e SnSe. Si derivano le ionicità di questi ed altri composti IV–VI dalla separazione delle bandes di valenza e dalle distanze interatomiche. Queste ionicità possono spiegare gli andamenti strutturali e le transizioni di fase all’interno della famiglia dei composti a valenza media <5>.

Резюме

Приводятся фотоэлектронные спектры GeS, GeSe, SnS и SnSe. Исходя из расщепления валентныхs-зон и межатомных расстояний, выводятся степени ионизации вышеукзанных соединений и других IV–VI соединений. Полученные степени ионизации объясняют структурные тенденции и фазовые переходы семейства соединений со средней валентностью <5>.

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Footnotes

  1. L. Ley, J. Azoulay andP. C. Kemeny: to be published.

  2. See,e.g.,J. C. Phillips: inBonds and Bands in Semiconductors (New York, N. Y., 1973);D. Schiferl:Phys. Rev. B,10, 3316 (1974).

  3. S. P. Kowalczyk, L. Ley, F. R. McFeely andD. A. Shirley:Journ. Chem. Phys.,61, 2850 (1974).

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  4. Lead salts: see ref. (3) ; SnTe:P. C. Kemeny andM. Cardona:J. Phys. C,9, 1301 (1976); GeTe: unpublished work of this laboratory.

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  5. C. J. M. Rooymans: inAdvances in High Pressure Research, edited byR. S. Bradley, Vol.2 (London, 1969), p. 1;D. Schiferl: private communication.

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Author notes

  1. J. Azoulay, M. Cardona & L. Ley

    Present address: Max-Planck-Institut für Festkörperforschung, 7000, Stuttgart 80, Federal Republic of Germany

  2. P. C. Kemeny

    Present address: Department of Physics, University of Nebraska, 68588, Lincoln, Nebr., USA

Authors and Affiliations

  1. Max-Planck-Institut für Festkörperforschung, 7000, Stuttgart 80, Federal Republic of Germany

    P. C. Kemeny

Authors
  1. P. C. Kemeny
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  2. J. Azoulay
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  3. M. Cardona
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  4. L. Ley
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Traduzione a cura della Redazione.

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Kemeny, P.C., Azoulay, J., Cardona, M. et al. Photoelectron spectra of GeS, GeSe, SnS and SnSe and their relation to structural trends and phase transitions within the average-valence-<5> compounds. Nuov Cim B 39, 709–714 (1977). https://doi.org/10.1007/BF02725814

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  • DOI: https://doi.org/10.1007/BF02725814

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