Two-dimensional superconductivity at the (111) LaAlO3/SrTiO3 interface

Journal article (2017)

Authors

D.J. Groenendijk QN/Caviglia Lab - AS
Inge Groen Student
J. de Bruijckere QN/van der Zant Lab - AS
R. Gaudenzi QN/van der Zant Lab - AS
H.S.J. van der Zant QN/van der Zant Lab - AS
A. Caviglia QN/Caviglia Lab - AS
Research Group
QN/Caviglia Lab (AS) (TU Delft)
Copyright: © 2017 A.M. RinconVieiraLugarinhoMonteiro, D.J. Groenendijk, Inge Groen, J. de Bruijckere, R. Gaudenzi, H.S.J. van der Zant, A. Caviglia
DOI: https://doi.org/10.1103/PhysRevB.96.020504
More Info
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Published Date

17-07-2017

Language

English

Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/Caviglia Lab

Abstract

We report on the discovery and transport study of the superconducting ground state present at the (111)LaAlO3/SrTiO3 (LAO/STO) interface. The superconducting transition is consistent with a Berezinskii-Kosterlitz-Thouless transition and its two-dimensional nature is further corroborated by the anisotropy of the critical magnetic field, as calculated by Tinkham. The estimated superconducting layer thickness and coherence length are 10 and 60nm, respectively. The results of this work provide insight to clarify the microscopic details of superconductivity in LAO/STO interfaces, in particular in what concerns the link with orbital symmetry.