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Orbital Reconstruction and the Two-Dimensional Electron Gas at theLaAlO3/SrTiO3Interface
Open accessAbstract
In 2004, Ohtomo and Hwang discovered that an electron gas is created at the interface between insulating LaAlO3 and SrTiO3 compounds. Here we show that the generation of a conducting electron gas is related to an orbital reconstruction occurring at the LaAlO3/SrTiO3 interface. Our results are based on extensive investigations of the electronic properties and of the orbital structure of the interface using x-ray absorption spectroscopy. In particular, we find that the degeneracy of the Ti 3d states is fully removed and that the Ti 3d xy levels become the first available states for conducting electrons.
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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
Fête, A., Gariglio, S., Berthod, C., Li, D., Stornaiuolo, D., Gabay, M., & Triscone, J.-M. (2014) · New Journal of Physics · doi:10.1088/1367-2630/16/11/112002 · Cited by 56
Metadata
- Authors
- Salluzzo, M., Cezar, J. C., Brookes, N. B., Bisogni, V., De Luca, G. M., Richter, C., Thiel, S., Mannhart, J., Huijben, M., Brinkman, A., Rijnders, G., & Ghiringhelli, G.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2009-04-23
- Volume
- 102
- Issue
- 16
- Pages
- 166804-166804
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2031222025
- Cited by
- 309
- References
- 0
- FWCI
- 10.05
- Type
- journal article
- Language
- en
- Open access
- green
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- Salluzzo, M., Cezar, J. C., Brookes, N. B., Bisogni, V., De Luca, G. M., Richter, C., Thiel, S., Mannhart, J., Huijben, M., Brinkman, A., Rijnders, G., & Ghiringhelli, G. (2009). Orbital Reconstruction and the Two-Dimensional Electron Gas at theLaAlO3/SrTiO3Interface. Physical Review Letters. https://doi.org/10.1103/physrevlett.102.166804
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