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Influence of oxygen vacancies on two-dimensional electron systems at SrTiO3-based interfaces and surfaces
Citation Link: https://doi.org/10.15480/882.2015
Publikationstyp
Journal Article
Date Issued
2017-07-10
Sprache
English
TORE-DOI
Volume
226
Issue
11
Start Page
2457
End Page
2475
Citation
European Physical Journal: Special Topics 11 (226): 2457-2475 (2017)
Publisher DOI
Scopus ID
Publisher
Springer
The insulator SrTiO3 can host high-mobility two-dimensional electron systems on its surfaces and at interfaces with other oxides. While for the bare surface a two-dimensional electron system can only be induced by oxygen vacancies, it is believed that the metallicity of heterostructure interfaces as in LaAlO3/SrTiO3 is caused by other mechanisms related to the polar discontinuity at the interface. Based on calculations using density functional and dynamical mean-field theory as well as on experimental results using photoemission spectroscopy we elucidate the role of oxygen vacancies, thereby highlighting their importance for the electronic and magnetic properties of the systems under study.
DDC Class
530: Physik
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