SPEAKER PROFILE |
 Prof. Jean-Marc Triscone University of Geneva SWITZERLAND |
Conductivity and Superconductivity between Insulating Oxides
Abstract
D. Li 1, A. Fête1, W. Liu1, M. Boselli1, S. Gariglio1, M. Gabay2, and J.-M. Triscone1
1 DQMP, University of Geneva, 24 quai E.-Ansermet, CH-1211 Geneva 4, Switzerland
1 Laboratoire de Physique des Solides, Université de Paris-Sud, 91405 Orsay, Cedex, France
The interface between LaAlO3 and SrTiO3, two good band insulators, which was found in 2004 to be conducting [1], and superconducting with a maximum critical temperature of about 200 mK [2] is attracting of lot of attention. Being naturally sandwiched between two insulators, it is an ideal system for performing electric field effect experiments that allow the carrier density to be tuned and an on-off switching of superconductivity to be achieved [3]. In this talk, I will briefly review the amazing properties of this system and mention recent results on thermopower that allows localized states to be probed.
[1] A. Ohtomo, H. Y. Hwang, Nature 427, 423 (2004).
[2] N. Reyren, S. Thiel, A. D. Caviglia, L. Fitting Kourkoutis, G. Hammerl, C. Richter, C. W. Schneider, T. Kopp, A.-S. Ruetschi, D. Jaccard, M. Gabay, D. A. Muller, J.-M. Triscone and J. Mannhart, Science 317, 1196 (2007).
[3] A. Caviglia, S. Gariglio, N. Reyren, D. Jaccard, T. Schneider, M. Gabay, S. Thiel, G. Hammerl, J. Mannhart, and J.-M. Triscone, Nature 456, 624 (2008).
[4] I. Pallecchi, F. Telesio, D. Li, A. Fête, S. Gariglio, J.-M. Triscone, A. Filippetti, P. Delugas, V. Fiorentini, and D. Marré, to appear in Nature Communications.
Jean-Marc Triscone obtained his PhD in 1987 in Geneva with Professor Øystein Fischer. In 1990-1991 and in 1995 he was a visiting scientist at Stanford University. Since 1996, he has been a full Professor in Geneva. Between 2001 and 2007 he has been Deputy-director of the National Center of Competence in Research MaNEP. Between July 2007 and June 2014, he was the Dean of the Faculty of sciences in Geneva.
Since 2006, he is a Fellow of the American Physical Society. He obtained in 2013 an ERC Synergy grant. He was recently awarded, with Harold Hwang and Jochen Mannhart, the 2014 European Physical Society Condensed Matter Division Europhysics Prize “For the discovery and investigation of electron liquids at oxide interfaces”.
(DQMP, University of Geneva, 24 quai E.-Ansermet, 1211 Geneva 4, Switzerland, phone +41 22 379 6218, jean-marc.triscone@unige.ch).
1 DQMP, University of Geneva, 24 quai E.-Ansermet, CH-1211 Geneva 4, Switzerland
1 Laboratoire de Physique des Solides, Université de Paris-Sud, 91405 Orsay, Cedex, France
The interface between LaAlO3 and SrTiO3, two good band insulators, which was found in 2004 to be conducting [1], and superconducting with a maximum critical temperature of about 200 mK [2] is attracting of lot of attention. Being naturally sandwiched between two insulators, it is an ideal system for performing electric field effect experiments that allow the carrier density to be tuned and an on-off switching of superconductivity to be achieved [3]. In this talk, I will briefly review the amazing properties of this system and mention recent results on thermopower that allows localized states to be probed.
[1] A. Ohtomo, H. Y. Hwang, Nature 427, 423 (2004).
[2] N. Reyren, S. Thiel, A. D. Caviglia, L. Fitting Kourkoutis, G. Hammerl, C. Richter, C. W. Schneider, T. Kopp, A.-S. Ruetschi, D. Jaccard, M. Gabay, D. A. Muller, J.-M. Triscone and J. Mannhart, Science 317, 1196 (2007).
[3] A. Caviglia, S. Gariglio, N. Reyren, D. Jaccard, T. Schneider, M. Gabay, S. Thiel, G. Hammerl, J. Mannhart, and J.-M. Triscone, Nature 456, 624 (2008).
[4] I. Pallecchi, F. Telesio, D. Li, A. Fête, S. Gariglio, J.-M. Triscone, A. Filippetti, P. Delugas, V. Fiorentini, and D. Marré, to appear in Nature Communications.
Bio
Jean-Marc Triscone is Professor of Physics in the Department of Quantum Matter Physics at the University of Geneva, leading a group working on correlated oxide heterostructures and oxide interface physics.Jean-Marc Triscone obtained his PhD in 1987 in Geneva with Professor Øystein Fischer. In 1990-1991 and in 1995 he was a visiting scientist at Stanford University. Since 1996, he has been a full Professor in Geneva. Between 2001 and 2007 he has been Deputy-director of the National Center of Competence in Research MaNEP. Between July 2007 and June 2014, he was the Dean of the Faculty of sciences in Geneva.
Since 2006, he is a Fellow of the American Physical Society. He obtained in 2013 an ERC Synergy grant. He was recently awarded, with Harold Hwang and Jochen Mannhart, the 2014 European Physical Society Condensed Matter Division Europhysics Prize “For the discovery and investigation of electron liquids at oxide interfaces”.
(DQMP, University of Geneva, 24 quai E.-Ansermet, 1211 Geneva 4, Switzerland, phone +41 22 379 6218, jean-marc.triscone@unige.ch).