Transition from a uni- to a bimodal interfacial charge distribution in LaAlO 3 / SrTiO 3 upon cooling
dc.bibliographicCitation.firstPage | 18359 | |
dc.bibliographicCitation.journalTitle | Scientific Reports | eng |
dc.bibliographicCitation.volume | 10 | |
dc.contributor.author | Zwiebler, M. | |
dc.contributor.author | Di Gennaro, E. | |
dc.contributor.author | Hamann-Borrero, J.E. | |
dc.contributor.author | Ritschel, T. | |
dc.contributor.author | Green, R.J. | |
dc.contributor.author | Sawatzky, G.A. | |
dc.contributor.author | Schierle, E. | |
dc.contributor.author | Weschke, E. | |
dc.contributor.author | Leo, A. | |
dc.contributor.author | Granozio, F. Miletto | |
dc.contributor.author | Geck, J. | |
dc.date.accessioned | 2022-12-05T09:41:58Z | |
dc.date.available | 2022-12-05T09:41:58Z | |
dc.date.issued | 2020 | |
dc.description.abstract | We present a combined resonant soft X-ray reflectivity and electric transport study of LaAlO 3/SrTiO 3 field effect devices. The depth profiles with atomic layer resolution that are obtained from the resonant reflectivity reveal a pronounced temperature dependence of the two-dimensional electron liquid at the LaAlO 3/SrTiO 3 interface. At room temperature the corresponding electrons are located close to the interface, extending down to 4 unit cells into the SrTiO 3 substrate. Upon cooling, however, these interface electrons assume a bimodal depth distribution: They spread out deeper into the SrTiO 3 and split into two distinct parts, namely one close to the interface with a thickness of about 4 unit cells and another centered around 9 unit cells from the interface. The results are consistent with theoretical predictions based on oxygen vacancies at the surface of the LaAlO 3 film and support the notion of a complex interplay between structural and electronic degrees of freedom. © 2020, The Author(s). | eng |
dc.description.version | publishedVersion | |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/10497 | |
dc.identifier.uri | http://dx.doi.org/10.34657/9533 | |
dc.language.iso | eng | |
dc.publisher | [London] : Macmillan Publishers Limited, part of Springer Nature | |
dc.relation.doi | https://doi.org/10.1038/s41598-020-74364-7 | |
dc.relation.essn | 2045-2322 | |
dc.rights.license | CC BY 4.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.subject.ddc | 500 | |
dc.subject.ddc | 600 | |
dc.title | Transition from a uni- to a bimodal interfacial charge distribution in LaAlO 3 / SrTiO 3 upon cooling | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | |
wgl.contributor | IFWD | |
wgl.subject | Physik | ger |
wgl.type | Zeitschriftenartikel | ger |
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