The DOI matches its Crossref record; 13 of the 13 references it cites were found in a registry or an index.
Observation of a ν=1/2 fractional quantum Hall state in a double-layer electron system
Abstract
We report the observation, for the first time, of a fractional quantum Hall state at \ensuremath{\nu}=1/2 Landau-level filling in a low disorder, double-layer electron system realized in a 680-\AA{}-wide GaAs/AlGaAs single quantum well. A nearly vanishing diagonal resistance and a Hall resistance quantized at 2h/${\mathit{e}}^{2}$ to within 0.3% are observed at \ensuremath{\simeq}15 T and \ensuremath{\simeq}26 mK. The activated temperature dependence of the diagonal resistance minimum yields a quasiparticle excitation energy gap of 230 mK.
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.
Integrity signals
Registry
Cites
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.
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
Observation of an even-denominator quantum number in the fractional quantum Hall effect
Willett, R., Eisenstein, J. P., Störmer, H. L., Tsui, D. C., Gossard, A. C., & English, J. H. (1987) · Physical Review Letters · doi:10.1103/physrevlett.59.1776 · Cited by 1,135
Self-citationPaired Hall state at half filling
Greiter, M., Wen, X.-G., & Wilczek, F. (1991) · Physical Review Letters · doi:10.1103/physrevlett.66.3205 · Cited by 392
Spin-singlet wave function for the half-integral quantum Hall effect
Haldane, F. D. M., & Rezayi, E. H. (1988) · Physical Review Letters · doi:10.1103/physrevlett.60.956 · Cited by 313
Willett, R. L., Paalanen, M. A., Ruel, R. R., West, K. W., Pfeiffer, L. N., & Bishop, D. J. (1990) · Physical Review Letters · doi:10.1103/physrevlett.65.112 · Cited by 277
Collapse of integer Hall gaps in a double-quantum-well system
MacDonald, A. H., Platzman, P. M., & Boebinger, G. S. (1990) · Physical Review Letters · doi:10.1103/physrevlett.65.775 · Cited by 274
Collapse of the Even-Denominator Fractional Quantum Hall Effect in Tilted Fields
Eisenstein, J. P., Willett, R., Stormer, H. L., Tsui, D. C., Gossard, A. C., & English, J. H. (1988) · Physical Review Letters · doi:10.1103/physrevlett.61.997 · Cited by 191
Self-citationFractional quantum Hall effect in two-layered systems
Yoshioka, D., MacDonald, A. H., & Girvin, S. M. (1989) · Physical Review B · doi:10.1103/physrevb.39.1932 · Cited by 190
Willett, R. L., Stormer, H. L., Tsui, D. C., Gossard, A. C., & English, J. H. (1988) · Physical review. B, Condensed matter · doi:10.1103/physrevb.37.8476 · Cited by 129
Self-citationFractional quantum Hall effect in very-low-density GaAs/ Alx Ga1−x As heterostructures
Sajoto, T., Suen, Y. W., Engel, L. W., Santos, M. B., & SHAYEGAN, M. (1990) · Physical review. B, Condensed matter · doi:10.1103/physrevb.41.8449 · Cited by 97
Self-citationQuantum Hall effect in double-quantum-well systems
He, S., Xie, X. C., Sarma, S. D., & Zhang, F. (1991) · Physical review. B, Condensed matter · doi:10.1103/physrevb.43.9339 · Cited by 80
Cited by
Topological orders and edge excitations in fractional quantum Hall states
Wen, X.-G. (1995) · Advances in Physics · doi:10.1080/00018739500101566 · Cited by 1,060
Neutral superfluid modes and ‘‘magnetic’’ monopoles in multilayered quantum Hall systems
Wen, X.-G., & Zee, A. (1992) · Physical Review Letters · doi:10.1103/physrevlett.69.1811 · Cited by 294
Metadata
- Authors
- Suen, Y. W., Engel, L. W., Santos, M. B., Shayegan, M., & Tsui, D. C.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1992-03-02
- Volume
- 68
- Issue
- 9
- Pages
- 1379-1382
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W2077078089
- Cited by
- 425
- References
- 13
- FWCI
- 20.02
- 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
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Observation of a ν=1/2 fractional quantum Hall state in a double-layer electron system. https://app.cochat.ai/papers/10.1103/physrevlett.68.1379
- The paper
- Suen, Y. W., Engel, L. W., Santos, M. B., Shayegan, M., & Tsui, D. C. (1992). Observation of a ν=1/2 fractional quantum Hall state in a double-layer electron system. Physical Review Letters. https://doi.org/10.1103/physrevlett.68.1379
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.
