en
Scientific article
Open access
English

Two-Dimensional Quantum Oscillations of the Conductance at LaAlO3/SrTiO3 Interfaces

Published inPhysical review letters, vol. 105, no. 23, 236802
Publication date2010
Abstract

We report on a study of magnetotransport in LaAlO3/SrTiO3 interfaces characterized by mobilities of the order of several thousands cm2/V s. We observe Shubnikov–de Haas oscillations whose period depends only on the perpendicular component of the magnetic field. This observation directly indicates the formation of a two-dimensional electron gas originating from quantum confinement at the interface. From the temperature dependence of the oscillation amplitude we extract an effective carrier mass m*≃1.45me. An electric field applied in the back-gate geometry increases the mobility, the carrier density, and the oscillation frequency.

Citation (ISO format)
CAVIGLIA, Andrea et al. Two-Dimensional Quantum Oscillations of the Conductance at LaAlO<sub>3</sub>/SrTiO<sub>3</sub> Interfaces. In: Physical review letters, 2010, vol. 105, n° 23, p. 236802. doi: 10.1103/PhysRevLett.105.236802
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal0031-9007
909views
1490downloads

Technical informations

Creation10/22/2012 5:17:00 PM
First validation10/22/2012 5:17:00 PM
Update time03/14/2023 5:43:29 PM
Status update03/14/2023 5:43:29 PM
Last indexation01/16/2024 12:25:17 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack