دورية أكاديمية
Transition from a uni- to a bimodal interfacial charge distribution in $$\hbox {LaAlO}_3$$/$$\hbox {SrTiO}_3$$ upon cooling
| العنوان: | Transition from a uni- to a bimodal interfacial charge distribution in $$\hbox {LaAlO}_3$$/$$\hbox {SrTiO}_3$$ upon cooling |
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| المؤلفون: | Zwiebler, M., Di Gennaro, E., Hamann-Borrero, J. E., Ritschel, T., Green, R. J., Sawatzky, G. A., Schierle, E., Weschke, E., Leo, A., Granozio, F. Miletto, Geck, J. |
| المساهمون: | Deutsche Forschungsgemeinschaft, Projekt DEAL |
| المصدر: | Scientific Reports ; volume 10, issue 1 ; ISSN 2045-2322 |
| بيانات النشر: | Springer Science and Business Media LLC |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Multidisciplinary |
| الوصف: | We present a combined resonant soft X-ray reflectivity and electric transport study of $$\hbox {LaAlO}_3$$ LaAlO 3 / $$\hbox {SrTiO}_3$$ 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 $$\hbox {LaAlO}_3$$ LaAlO 3 / $$\hbox {SrTiO}_3$$ SrTiO 3 interface. At room temperature the corresponding electrons are located close to the interface, extending down to 4 unit cells into the $$\hbox {SrTiO}_3$$ SrTiO 3 substrate. Upon cooling, however, these interface electrons assume a bimodal depth distribution: They spread out deeper into the $$\hbox {SrTiO}_3$$ 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 $$\hbox {LaAlO}_3$$ LaAlO 3 film and support the notion of a complex interplay between structural and electronic degrees of freedom. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1038/s41598-020-74364-7 |
| الإتاحة: | https://doi.org/10.1038/s41598-020-74364-7Test https://www.nature.com/articles/s41598-020-74364-7.pdfTest https://www.nature.com/articles/s41598-020-74364-7Test |
| حقوق: | https://creativecommons.org/licenses/by/4.0Test ; https://creativecommons.org/licenses/by/4.0Test |
| رقم الانضمام: | edsbas.DA8E80D4 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1038/s41598-020-74364-7 |
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