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Magnetic field induced transition in superconducting LaTiO 3/SrTiO3 interfaces (Contributo in atti di convegno)

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Magnetic field induced transition in superconducting LaTiO 3/SrTiO3 interfaces (Contributo in atti di convegno) (literal)

Anno

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Alternative label

J. Biscaras (1); N. Bergeal (1); S. Hurand (1); C. Feuillet-Palma (1); A. Rastogi (2); R.C. Budhani (2,3); M. Grilli (4); S. Caprara (4); J. Lesueur (1) (2013)
Magnetic field induced transition in superconducting LaTiO 3/SrTiO3 interfaces
in 10th International Conference on Materials and Mechanisms of Superconductivity, M2S 2012, Washington, DC, United States, 29 July-3 August 2012
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

J. Biscaras (1); N. Bergeal (1); S. Hurand (1); C. Feuillet-Palma (1); A. Rastogi (2); R.C. Budhani (2,3); M. Grilli (4); S. Caprara (4); J. Lesueur (1) (literal)

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Note

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(1) LPEM- UMR8213/CNRS-ESPCI ParisTech-UPMC, 10 rue Vauquelin, 75005 Paris, France (2) Condensed Matter-Low Dimensional Systems Laboratory, Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016, India (3) National Physical Laboratory, New Delhi-110012, India (4) CNR-ISC, CNISM, Università di Roma La Sapienza, P.le Aldo Moro 5, 00185 Roma, Italy (literal)

Titolo

Magnetic field induced transition in superconducting LaTiO 3/SrTiO3 interfaces (literal)

Abstract

Superconductivity at the LaTiO3/SrTiO3 interface is studied by low temperature and high magnetic field measurements as a function of a back-gate voltage. We show that it is intimately related to the appearance of a low density (a few 1012 cm-2) of high mobility carriers, in addition to low mobility ones always present in the system. These carriers form superconducting puddles coupled by a metallic two-dimensional electron gas, as revealed by the analysis of the phase transition driven by a perpendicular magnetic field. Two critical fields are evidenced, and a quantitative comparison with a recent theoretical model is made. (literal)

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