The DOI matches its Crossref record; 22 of the 22 references it cites were found in a registry or an index.
A universal critical density underlying the physics of electrons at the LaAlO3/SrTiO3 interface
Open accessAbstract
The two-dimensional electron system at the interface between the insulating oxides LaAlO3 and SrTiO3 exhibits ferromagnetism, superconductivity and a range of unique magnetotransport properties. An open experimental challenge is to identify, out of the multitudinous energy bands predicted to exist at the interface, the key ingredients underlying its emergent transport phenomena. Here we show, using magnetotransport measurements, that a universal Lifshitz transition between d orbitals of different symmetries lies at the core of the observed phenomena. We find that LaAlO3/SrTiO3 systems generically switch from one- to two-carrier transport at a universal carrier density, which is independent of the LaAlO3 thickness and electron mobility. Interestingly, the maximum superconducting critical temperature occurs also at the Lifshitz density, indicating a possible connection between the two phenomena. A simple band model, allowing for spin-orbit coupling at the atomic level, connects the observed transition to a variety of previously reported properties. Our results demonstrate that the fascinating behaviour observed so far in these oxides follows from a small but fundamental set of bands. When lanthanum aluminate and strontium titanate are brought together, a 2D electron gas with many interesting properties forms at the interface. Magnetotransport results obtained by Joshuaet al. suggest that the behaviour of this interface is governed by a small but fundamental set of electronic bands.
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Cites
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Cited by
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
- Joshua, A., Pecker, S., Ruhman, J., Altman, E., & Ilani, S.
- Venue
- Nature Communications
- Published
- 2012-10-16
- Volume
- 3
- Issue
- 1
- Pages
- 1129-1129
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2103550416
- Cited by
- 344
- References
- 22
- FWCI
- 10.86
- Type
- journal article
- Language
- en
- Open access
- bronze
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