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Dominance of Atomic States in a Solid: Selective Breakdown of the Virtual Crystal Approximation in a Semiconductor Alloy, Hg sub 1--x Cd sub x Te

Ultraviolet-photoelectron-spectroscopy experiments and a coherent-potential-approximation calculation of the density-of-states of Hg sub 1--x Cd sub x Te show a clear deviation from virtual crystal behavior in bands approx = 5 eV below the valence-band max. where there is a 60% s -electron contribut... Full description

Journal Title: Physical Review Letters 27 Sept. 1982, Vol.49(13), pp.948-951
Main Author: Spicer, W
Other Authors: Silberman, J , Morgen, J , Lindau, I , Wilson, J , Chen, A-B , Sher, A,
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0031-9007
Link: http://search.proquest.com/docview/23366092/?pq-origsite=primo
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title: Dominance of Atomic States in a Solid: Selective Breakdown of the Virtual Crystal Approximation in a Semiconductor Alloy, Hg sub 1--x Cd sub x Te
format: Article
creator:
  • Spicer, W
  • Silberman, J
  • Morgen, J
  • Lindau, I
  • Wilson, J
  • Chen, A-B
  • Sher, A
subjects:
  • Mercury Compounds
  • Atomic Properties
  • Cadmium Compounds
  • Tellurium Compounds
  • Density of States
  • Physics of Metals (MD)
  • Article
ispartof: Physical Review Letters, 27 Sept. 1982, Vol.49(13), pp.948-951
description: Ultraviolet-photoelectron-spectroscopy experiments and a coherent-potential-approximation calculation of the density-of-states of Hg sub 1--x Cd sub x Te show a clear deviation from virtual crystal behavior in bands approx = 5 eV below the valence-band max. where there is a 60% s -electron contribution. The large ( approx = 1.4 eV) atomic s -state shift between Hg and Cd is responsible for this deviation and for the decrease of the band gap (1.5 to 0 eV) with composition, the high electron mobility (10 exp 6 cm exp 2 /V s) and difficulties experienced with growth and mechanical properties. 7 ref.--AA
language: eng
source:
identifier: ISSN: 0031-9007
fulltext: fulltext
issn:
  • 00319007
  • 0031-9007
url: Link


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titleDominance of Atomic States in a Solid: Selective Breakdown of the Virtual Crystal Approximation in a Semiconductor Alloy, Hg sub 1--x Cd sub x Te
ispartofPhysical Review Letters, 27 Sept. 1982, Vol.49(13), pp.948-951
identifierISSN: 0031-9007
subjectMercury Compounds ; Atomic Properties ; Cadmium Compounds ; Tellurium Compounds ; Density of States ; Physics of Metals (MD) ; Article
descriptionUltraviolet-photoelectron-spectroscopy experiments and a coherent-potential-approximation calculation of the density-of-states of Hg sub 1--x Cd sub x Te show a clear deviation from virtual crystal behavior in bands approx = 5 eV below the valence-band max. where there is a 60% s -electron contribution. The large ( approx = 1.4 eV) atomic s -state shift between Hg and Cd is responsible for this deviation and for the decrease of the band gap (1.5 to 0 eV) with composition, the high electron mobility (10 exp 6 cm exp 2 /V s) and difficulties experienced with growth and mechanical properties. 7 ref.--AA
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titleDominance of Atomic States in a Solid: Selective Breakdown of the Virtual Crystal Approximation in a Semiconductor Alloy, Hg sub 1--x Cd sub x Te
descriptionUltraviolet-photoelectron-spectroscopy experiments and a coherent-potential-approximation calculation of the density-of-states of Hg sub 1--x Cd sub x Te show a clear deviation from virtual crystal behavior in bands approx = 5 eV below the valence-band max. where there is a 60% s -electron contribution. The large ( approx = 1.4 eV) atomic s -state shift between Hg and Cd is responsible for this deviation and for the decrease of the band gap (1.5 to 0 eV) with composition, the high electron mobility (10 exp 6 cm exp 2 /V s) and difficulties experienced with growth and mechanical properties. 7 ref.--AA
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abstractUltraviolet-photoelectron-spectroscopy experiments and a coherent-potential-approximation calculation of the density-of-states of Hg sub 1--x Cd sub x Te show a clear deviation from virtual crystal behavior in bands approx = 5 eV below the valence-band max. where there is a 60% s -electron contribution. The large ( approx = 1.4 eV) atomic s -state shift between Hg and Cd is responsible for this deviation and for the decrease of the band gap (1.5 to 0 eV) with composition, the high electron mobility (10 exp 6 cm exp 2 /V s) and difficulties experienced with growth and mechanical properties. 7 ref.--AA
urlhttp://search.proquest.com/docview/23366092/
doi10.1103/PhysRevLett.49.948
date1982-09-27