Nicolas Bergeal,LPEM

LPEM Webinar, Thursday June 26 at 2PM (Paris Time, GMT+2) by Nicolas Bergeal,

CNRS/ESPCI, Sorbonne Université, PSL Research University, Paris, France

Superconducting LaAlO3/SrTiO3 interfaces

The achievement of high-quality epitaxial interfaces involving transition metal oxides gives a unique opportunity to engineer artificial materials where new electronic phases take place. The discovery of a high mobility two-dimensional electron gas (2-DEG) confined in a quantum well at the interface between two insulating oxides LaAlO3 and SrTiO3 is probably one of the most prominent examples in the field. Unlike more conventional semiconductor based quantum wells,

A key feature of these electronic systems lies in the possibility to control their carrier density by electric field effect. In this talk, I will review several field-effect experiments realized on various types of LaAlO3/SrTiO3 interfaces both in back-gate and top-gate geometry. In particular, I will present recent resonant microwave transport measurements that allows extracting fundamental energy scales associated with superconductivity. Comparison between superconducting properties of LaAlO3/SrTiO3 heterostructures grown along different crystal orientations ((001) and (110)) will also be discussed. Finally, I will present the realization of top-gated LaAlO3/SrTiO3 devices whose physical properties, including superconductivity and Rashba spin-orbit coupling, can be tuned over a wide range of electrostatic doping, opening new perspectives for the realization of topological mesoscopic devices.

Haut de page

À lire aussi...

Domenico Di Sante, Université de Wuerzburg

Jeudi 13 Décembre 2018 à 11h00, Amphi Urbain, Bat N, RdC Spin-Orbit driven Phenomena and their Interplay with External Factors. Modeling Cross (...) 

> Lire la suite...

Pietro Gambardella,Department of Materials, ETH Zurich, CH - 8093 Zürich, Switzerland

Thursday, December 3 2PM (Paris time) Switching, sensing, and coupling nanomagnets enabled by spin-orbit coupling The spintronics landscape has (...) 

> Lire la suite...