Space group symmetry of the conduction band minimum in very short period GaAs AlAs superlattices

Weikun Ge; W. D. Schmidt; M. D. Sturge; L. N. Pfeiffer; K. W. West

doi:10.1016/0038-1098(92)90726-P

Space group symmetry of the conduction band minimum in very short period GaAs AlAs superlattices

Weikun Ge, W. D. Schmidt, M. D. Sturge, L. N. Pfeiffer, K. W. West

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In a perfect (GaAs)_m(AlAs)_n type-II superlattice the symmetry of the conduction band states, and therefore the band mixing, depends on whether m, n or (m+n) are odd or even. We have investigated the symmetry of the conduction band minima in very short-period superlattices (m≤n≤4) by time resolved photoluminescence under applied uniaxial stress, and find that selection rules that depend on space group symmetry through k-conservation are well obeyed, but parity with respect to space inversion is apparently not a good quantum number in our samples.

Original language	English (US)
Pages (from-to)	951-954
Number of pages	4
Journal	Solid State Communications
Volume	82
Issue number	12
DOIs	https://doi.org/10.1016/0038-1098(92)90726-P
State	Published - Jun 1992
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(92)90726-P

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title = "Space group symmetry of the conduction band minimum in very short period GaAs AlAs superlattices",

abstract = "In a perfect (GaAs)m(AlAs)n type-II superlattice the symmetry of the conduction band states, and therefore the band mixing, depends on whether m, n or (m+n) are odd or even. We have investigated the symmetry of the conduction band minima in very short-period superlattices (m≤n≤4) by time resolved photoluminescence under applied uniaxial stress, and find that selection rules that depend on space group symmetry through k-conservation are well obeyed, but parity with respect to space inversion is apparently not a good quantum number in our samples.",

author = "Weikun Ge and Schmidt, {W. D.} and Sturge, {M. D.} and Pfeiffer, {L. N.} and West, {K. W.}",

year = "1992",

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T1 - Space group symmetry of the conduction band minimum in very short period GaAs AlAs superlattices

AU - Ge, Weikun

AU - Schmidt, W. D.

AU - Sturge, M. D.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 1992/6

Y1 - 1992/6

N2 - In a perfect (GaAs)m(AlAs)n type-II superlattice the symmetry of the conduction band states, and therefore the band mixing, depends on whether m, n or (m+n) are odd or even. We have investigated the symmetry of the conduction band minima in very short-period superlattices (m≤n≤4) by time resolved photoluminescence under applied uniaxial stress, and find that selection rules that depend on space group symmetry through k-conservation are well obeyed, but parity with respect to space inversion is apparently not a good quantum number in our samples.

AB - In a perfect (GaAs)m(AlAs)n type-II superlattice the symmetry of the conduction band states, and therefore the band mixing, depends on whether m, n or (m+n) are odd or even. We have investigated the symmetry of the conduction band minima in very short-period superlattices (m≤n≤4) by time resolved photoluminescence under applied uniaxial stress, and find that selection rules that depend on space group symmetry through k-conservation are well obeyed, but parity with respect to space inversion is apparently not a good quantum number in our samples.

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VL - 82

SP - 951

EP - 954

JO - Solid State Communications

JF - Solid State Communications

IS - 12

ER -

Space group symmetry of the conduction band minimum in very short period GaAs AlAs superlattices

Abstract

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