Student or educator? Sign up with your school email and get 6 months of Pro free.
CoChat
Sign Up
Cited by 454

The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.

GaAs lower conduction-band minima: Ordering and properties

Aspnes, D. E.·1976·Physical Review B
DOI 10.1103/physrevb.14.5331
Open this paper in CoChat — free account

Abstract

Synchrotron-radiation Schottky-barrier electroreflectance spectra from the $\mathrm{Ga} 3{d}^{V}$ core levels to the lower $s{p}^{3}$ conduction band have shown that the ${L}_{6}^{C}$ lower conduction-band minima are located 170 \ifmmode\pm\else\textpm\fi{} 30 meV in energy below the ${X}_{6}^{C}$ minima in GaAs. Here, we investigate the implications of this ordering, which is opposite to that commonly accepted as correct. We find that, without exception, the results of previous experiments that apparently supported the opposite ordering can be reinterpreted within the ${\ensuremath{\Gamma}}_{6}^{C}\ensuremath{-}{L}_{6}^{C}\ensuremath{-}{X}_{6}^{C}$ model. By performing a line-shape analysis, we resolve an apparent discrepancy between intraconduction band absorption measurements of the ${X}_{6}^{C}\ensuremath{-}{\ensuremath{\Gamma}}_{6}^{C}$ energy separation. By comparing these optical results with other modulation spectroscopic ($s{p}^{3}$ valence-conduction-band electroreflectance, high-precision reflectance) data, combining these with the results of photoemission, transport (high pressure and high temperature), semiconductor alloy, and luminescence measurements, nonlocal pseudopotential calculations $\stackrel{\ensuremath{\rightarrow}}{\mathrm{k}}\ifmmode\cdot\else\textperiodcentered\fi{}\stackrel{\ensuremath{\rightarrow}}{\mathrm{p}}$ theory, the rigid-valence-band hypothesis, and using the systematics of other tetrahedrally bonded semiconductors with temperature and pressure, we obtain a set of consistent parameters describing the ${\ensuremath{\Gamma}}_{6}^{C}$, ${L}_{6}^{C}$, and ${X}_{6}^{C}$ lower conduction-band minima of GaAs. This model resolves the former contradictions in the apparent indirect threshold energy as determined previously by photoemission, transport, and optical measurements. Previous photoemission data for cesiated GaAs show clearly after structure reassignment that hot electrons thermalize in the ${L}_{6}^{C}$ minima. This implies that Gunn oscillator operation in GaAs involves the ${L}_{6}^{C}$, and not ${X}_{6}^{C}$, conduction-band minima. We obtain the variation of these minima with composition, $x$, in the $\mathrm{Ga}{\mathrm{As}}_{1\ensuremath{-}x}{\mathrm{P}}_{x}$ alloy series, and show that the increase in binding energy of the N isoelectronic trap with increasing As fraction in this series is in qualitative agreement with the prediction of a two-level model wherein a Koster-Slater isoelectronic trap potential interacts with the densities of states of both ${L}_{6}^{C}$ and ${X}_{6}^{C}$. These results have clear implications for the theory of operation of light-emitting diodes of GaAs and its alloys.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1103/physrevb.14.5331

Cites

36 of 36 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Cited by

See all 454

Metadata

Authors
Aspnes, D. E.
Venue
Physical Review B
Publisher
American Physical Society (APS)
Published
1976-12-15
Volume
14
Issue
12
Pages
5331-5343
ISSN
0556-2805 (ISSN-L)
DOI
10.1103/physrevb.14.5331
OpenAlex
W1984795328
Cited by
454
References
36
FWCI
13.43
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.