The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Subband Structure of a Two-Dimensional Electron Gas Formed at the Polar Surface of the Strong Spin-Orbit PerovskiteKTaO3
Open accessAbstract
We demonstrate the formation of a two-dimensional electron gas (2DEG) at the (100) surface of the $5d$ transition-metal oxide ${\mathrm{KTaO}}_{3}$. From angle-resolved photoemission, we find that quantum confinement lifts the orbital degeneracy of the bulk band structure and leads to a 2DEG composed of ladders of subband states of both light and heavy carriers. Despite the strong spin-orbit coupling, our measurements provide a direct upper bound for the potential Rashba spin splitting of only $\ensuremath{\Delta}{k}_{\ensuremath{\parallel}}\ensuremath{\sim}0.02\text{ }\text{ }{\AA{}}^{\ensuremath{-}1}$ at the Fermi level. The polar nature of the ${\mathrm{KTaO}}_{3}(100)$ surface appears to help mediate the formation of the 2DEG as compared to nonpolar ${\mathrm{SrTiO}}_{3}(100)$.
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
Spin—Orbit Coupling Effects in Two-Dimensional Electron and Hole Systems
Winkler, R. (2003) · Springer Tracts in Modern Physics · doi:10.1007/b13586 · Cited by 2,489
Spin-orbit qubit in a semiconductor nanowire
Nadj-Perge, S., Frolov, S. M., Bakkers, E. P. A. M., & Kouwenhoven, L. P. (2010) · Nature · doi:10.1038/nature09682 · Cited by 703
Cited by
A universal critical density underlying the physics of electrons at the LaAlO3/SrTiO3 interface
Joshua, A., Pecker, S., Ruhman, J., Altman, E., & Ilani, S. (2012) · Nature Communications · doi:10.1038/ncomms2116 · Cited by 344
Metadata
- Authors
- King, P. D. C., He, R. H., Eknapakul, T., Buaphet, P., Mo, S.-K., Kaneko, Y., Harashima, S., Hikita, Y., Bahramy, M. S., Bell, C., Hussain, Z., Tokura, Y., Shen, Z.-X., Hwang, H. Y., Baumberger, F., & Meevasana, W.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2012-03-14
- Volume
- 108
- Issue
- 11
- Pages
- 117602-117602
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2132673045
- Cited by
- 212
- References
- 2
- FWCI
- 6.81
- 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: Subband Structure of a Two-Dimensional Electron Gas Formed at the Polar Surface of the Strong Spin-Orbit PerovskiteKTaO3. https://app.cochat.ai/papers/10.1103/physrevlett.108.117602
- The paper
- King, P. D. C., He, R. H., Eknapakul, T., Buaphet, P., Mo, S.-K., Kaneko, Y., Harashima, S., Hikita, Y., Bahramy, M. S., Bell, C., Hussain, Z., Tokura, Y., Shen, Z.-X., Hwang, H. Y., Baumberger, F., & Meevasana, W. (2012). Subband Structure of a Two-Dimensional Electron Gas Formed at the Polar Surface of the Strong Spin-Orbit PerovskiteKTaO3. Physical Review Letters. https://doi.org/10.1103/physrevlett.108.117602
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.
