The DOI matches its Crossref record.
Measurement of Positive and Negative Scattering Lengths in a Fermi Gas of Atoms
Open accessAbstract
We report on progress toward realizing a predicted superfluid phase in a Fermi gas of atoms. We present measurements of both large positive and large negative scattering lengths in a quantum degenerate Fermi gas of atoms near a magnetic-field Feshbach resonance. We employ an rf spectroscopy technique to directly measure the mean-field interaction energy, which is proportional to the s-wave scattering length. Near the peak of the resonance we observe a saturation of the interaction energy; it is in this strongly interacting regime that superfluidity is predicted to occur. We have also observed anisotropic expansion of the gas, which has recently been suggested as a signature of superfluidity. However, we find that this can be attributed to a purely collisional effect.
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
Cited by
Many-body physics with ultracold gases
Bloch, I., Dalibard, J., & Zwerger, W. (2008) · Reviews of Modern Physics · doi:10.1103/revmodphys.80.885 · Cited by 8,114
Creation of ultracold molecules from a Fermi gas of atoms
Regal, C. A., Ticknor, C., Bohn, J. L., & Jin, D. S. (2003) · Nature · doi:10.1038/nature01738 · Cited by 770
Self-citationMajorana Fermions in Equilibrium and in Driven Cold-Atom Quantum Wires
Jiang, L., Kitagawa, T., Alicea, J., Akhmerov, A. R., Pekker, D., Refael, G., Cirac, J. I., Demler, E., Lukin, M. D., & Zoller, P. (2011) · Physical Review Letters · doi:10.1103/physrevlett.106.220402 · Cited by 753
Using photoemission spectroscopy to probe a strongly interacting Fermi gas
Stewart, J. T., Gaebler, J. P., & Jin, D. S. (2008) · Nature · doi:10.1038/nature07172 · Cited by 543
Self-citationThe Physics of Pair-Density Waves: Cuprate Superconductors and Beyond
Agterberg, D. F., Davis, J. C. S., Edkins, S. D., Fradkin, E., Van Harlingen, D. J., Kivelson, S. A., Lee, P. A., Radzihovsky, L., Tranquada, J. M., & Wang, Y. (2020) · Annual Review of Condensed Matter Physics · doi:10.1146/annurev-conmatphys-031119-050711 · Cited by 428
Metadata
- Authors
- Regal, C. A., & Jin, D. S.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2003-06-13
- Volume
- 90
- Issue
- 23
- Pages
- 230404-230404
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2039037772
- Cited by
- 313
- References
- 0
- FWCI
- 20.66
- Type
- journal article
- Language
- en
- Open access
- green
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: Measurement of Positive and Negative Scattering Lengths in a Fermi Gas of Atoms. https://app.cochat.ai/papers/10.1103/physrevlett.90.230404
- The paper
- Regal, C. A., & Jin, D. S. (2003). Measurement of Positive and Negative Scattering Lengths in a Fermi Gas of Atoms. Physical Review Letters. https://doi.org/10.1103/physrevlett.90.230404
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.
