Length mismatch in random semiconductor alloys. II. Structural characterization of pseudobinaries

Y. Cai, Michael Thorpe

Research output: Contribution to journalArticle

83 Citations (Scopus)

Abstract

We have made an extensive study of the pseudobinary semiconductor compounds (A1-xBx)C, which includes both the III-V and the II-VI alloys. We use a Kirkwood model with all parameters derived from the elastic constants of the pure materials. It is shown that the mean lengths are linear in the composition x if the force constants for the two pure materials AC and BC are the same. We have derived analytic results for the mean lengths of AC and BC bonds and for their widths in the preceding paper. We construct an effective-medium theory for cases in which there is disorder in the force constants. This effective-medium theory is found to be in good agreement with the results of computer simulations of the same models. Mean values for the next-nearest-neighbor lengths are also given, and found to agree with extended x-ray-absorption fine-structure results.

Original languageEnglish (US)
Pages (from-to)15879-15886
Number of pages8
JournalPhysical Review B
Volume46
Issue number24
DOIs
StatePublished - 1992
Externally publishedYes

Fingerprint

Semiconductor materials
alternating current
Elastic constants
x ray absorption
X rays
Computer simulation
elastic properties
computerized simulation
Chemical analysis
fine structure
disorders

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Length mismatch in random semiconductor alloys. II. Structural characterization of pseudobinaries. / Cai, Y.; Thorpe, Michael.

In: Physical Review B, Vol. 46, No. 24, 1992, p. 15879-15886.

Research output: Contribution to journalArticle

Cai, Y. ; Thorpe, Michael. / Length mismatch in random semiconductor alloys. II. Structural characterization of pseudobinaries. In: Physical Review B. 1992 ; Vol. 46, No. 24. pp. 15879-15886.
@article{49b99fe69bca4a0fbfc23c1e490e552e,
title = "Length mismatch in random semiconductor alloys. II. Structural characterization of pseudobinaries",
abstract = "We have made an extensive study of the pseudobinary semiconductor compounds (A1-xBx)C, which includes both the III-V and the II-VI alloys. We use a Kirkwood model with all parameters derived from the elastic constants of the pure materials. It is shown that the mean lengths are linear in the composition x if the force constants for the two pure materials AC and BC are the same. We have derived analytic results for the mean lengths of AC and BC bonds and for their widths in the preceding paper. We construct an effective-medium theory for cases in which there is disorder in the force constants. This effective-medium theory is found to be in good agreement with the results of computer simulations of the same models. Mean values for the next-nearest-neighbor lengths are also given, and found to agree with extended x-ray-absorption fine-structure results.",
author = "Y. Cai and Michael Thorpe",
year = "1992",
doi = "10.1103/PhysRevB.46.15879",
language = "English (US)",
volume = "46",
pages = "15879--15886",
journal = "Physical Review B-Condensed Matter",
issn = "0163-1829",
publisher = "American Institute of Physics Publising LLC",
number = "24",

}

TY - JOUR

T1 - Length mismatch in random semiconductor alloys. II. Structural characterization of pseudobinaries

AU - Cai, Y.

AU - Thorpe, Michael

PY - 1992

Y1 - 1992

N2 - We have made an extensive study of the pseudobinary semiconductor compounds (A1-xBx)C, which includes both the III-V and the II-VI alloys. We use a Kirkwood model with all parameters derived from the elastic constants of the pure materials. It is shown that the mean lengths are linear in the composition x if the force constants for the two pure materials AC and BC are the same. We have derived analytic results for the mean lengths of AC and BC bonds and for their widths in the preceding paper. We construct an effective-medium theory for cases in which there is disorder in the force constants. This effective-medium theory is found to be in good agreement with the results of computer simulations of the same models. Mean values for the next-nearest-neighbor lengths are also given, and found to agree with extended x-ray-absorption fine-structure results.

AB - We have made an extensive study of the pseudobinary semiconductor compounds (A1-xBx)C, which includes both the III-V and the II-VI alloys. We use a Kirkwood model with all parameters derived from the elastic constants of the pure materials. It is shown that the mean lengths are linear in the composition x if the force constants for the two pure materials AC and BC are the same. We have derived analytic results for the mean lengths of AC and BC bonds and for their widths in the preceding paper. We construct an effective-medium theory for cases in which there is disorder in the force constants. This effective-medium theory is found to be in good agreement with the results of computer simulations of the same models. Mean values for the next-nearest-neighbor lengths are also given, and found to agree with extended x-ray-absorption fine-structure results.

UR - http://www.scopus.com/inward/record.url?scp=0001571258&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001571258&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.46.15879

DO - 10.1103/PhysRevB.46.15879

M3 - Article

AN - SCOPUS:0001571258

VL - 46

SP - 15879

EP - 15886

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 0163-1829

IS - 24

ER -