Strong correlations elucidate the electronic structure and phase diagram of LaAlO3/SrTiO3 interface

E. Maniv, M. Ben Shalom, A. Ron, M. Mograbi, A. Palevski, M. Goldstein and Y. Dagan ()
Additional contact information
E. Maniv: Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University
M. Ben Shalom: Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University
A. Ron: Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University
M. Mograbi: Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University
A. Palevski: Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University
M. Goldstein: Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University
Y. Dagan: Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: Abstract The interface between the two band insulators SrTiO3 and LaAlO3 has the unexpected properties of a two-dimensional electron gas. It is even superconducting with a transition temperature, Tc, that can be tuned using gate bias Vg, which controls the number of electrons added or removed from the interface. The gate bias–temperature (Vg, T) phase diagram is characterized by a dome-shaped region where superconductivity occurs, that is, Tc has a non-monotonic dependence on Vg, similar to many unconventional superconductors. Here, we report, the frequency of the quantum resistance-oscillations versus inverse magnetic field for various Vg. This frequency follows the same non-monotonic behaviour as Tc; a similar trend is seen in the low field limit of the Hall coefficient. We theoretically show that electronic correlations result in a non-monotonic population of the mobile band, which can account for the experimental behaviour of the normal transport properties and the superconducting dome.

Date: 2015
References: Add references at CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/ncomms9239 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9239

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms9239

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().