Symmetry of the lowest conduction band states in very short-period GaAsAlAs superlattices

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

doi:10.1016/0022-2313(91)90235-N

Symmetry of the lowest conduction band states in very short-period GaAsAlAs superlattices

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

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Abstract

The symmetry of the lowest conduction band minimum (CBM) in type-II (GaAs)_n(AlAs)_n short-period superlattices (SL) was investigated by photoluminescence (PL) decay, PL excitation (PLE) and PL under uniaxial compressive stress. The results show that for n ≥ 4, the CBM is in the center of the SL Brillouin zone (BZ) and the wave function is mainly derived from the bulk X_z state. For n ≤ 3, the CBM is away from the center of the SL BZ, and derives mainly from the bulk X_x,y states. Interface disorder plays an essential role in both the transition probabilities and the energy levels.

Original language	English (US)
Pages (from-to)	759-762
Number of pages	4
Journal	Journal of Luminescence
Volume	48-49
Issue number	PART 2
DOIs	https://doi.org/10.1016/0022-2313(91)90235-N
State	Published - 1991
Externally published	Yes

All Science Journal Classification (ASJC) codes

Biophysics
Biochemistry
General Chemistry
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/0022-2313(91)90235-N

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title = "Symmetry of the lowest conduction band states in very short-period GaAsAlAs superlattices",

abstract = "The symmetry of the lowest conduction band minimum (CBM) in type-II (GaAs)n(AlAs)n short-period superlattices (SL) was investigated by photoluminescence (PL) decay, PL excitation (PLE) and PL under uniaxial compressive stress. The results show that for n ≥ 4, the CBM is in the center of the SL Brillouin zone (BZ) and the wave function is mainly derived from the bulk Xz state. For n ≤ 3, the CBM is away from the center of the SL BZ, and derives mainly from the bulk Xx,y states. Interface disorder plays an essential role in both the transition probabilities and the energy levels.",

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

year = "1991",

doi = "10.1016/0022-2313(91)90235-N",

language = "English (US)",

volume = "48-49",

pages = "759--762",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

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}

TY - JOUR

T1 - Symmetry of the lowest conduction band states in very short-period GaAsAlAs superlattices

AU - Ge, Weikun

AU - Schmidt, W. D.

AU - Sturge, M. D.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 1991

Y1 - 1991

N2 - The symmetry of the lowest conduction band minimum (CBM) in type-II (GaAs)n(AlAs)n short-period superlattices (SL) was investigated by photoluminescence (PL) decay, PL excitation (PLE) and PL under uniaxial compressive stress. The results show that for n ≥ 4, the CBM is in the center of the SL Brillouin zone (BZ) and the wave function is mainly derived from the bulk Xz state. For n ≤ 3, the CBM is away from the center of the SL BZ, and derives mainly from the bulk Xx,y states. Interface disorder plays an essential role in both the transition probabilities and the energy levels.

AB - The symmetry of the lowest conduction band minimum (CBM) in type-II (GaAs)n(AlAs)n short-period superlattices (SL) was investigated by photoluminescence (PL) decay, PL excitation (PLE) and PL under uniaxial compressive stress. The results show that for n ≥ 4, the CBM is in the center of the SL Brillouin zone (BZ) and the wave function is mainly derived from the bulk Xz state. For n ≤ 3, the CBM is away from the center of the SL BZ, and derives mainly from the bulk Xx,y states. Interface disorder plays an essential role in both the transition probabilities and the energy levels.

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DO - 10.1016/0022-2313(91)90235-N

M3 - Article

AN - SCOPUS:0025840788

SN - 0022-2313

VL - 48-49

SP - 759

EP - 762

JO - Journal of Luminescence

JF - Journal of Luminescence

IS - PART 2

ER -

Symmetry of the lowest conduction band states in very short-period GaAsAlAs superlattices

Abstract

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