| AVS 57th International Symposium & Exhibition | |
| Nanometer-scale Science and Technology | Monday Sessions |
| Session NS-MoM |
| Session: | Oxide Based Nanoelectronics |
| Presenter: | A.D. Caviglia, University of Geneva, Switzerland |
| Authors: | A.D. Caviglia, University of Geneva, Switzerland S. Gariglio, University of Geneva, Switzerland N. Reyren, University of Geneva, Switzerland C. Cancellieri, University of Geneva, Switzerland A. Fête, University of Geneva, Switzerland M. Gabay, University of Paris-Sud, France J.-M. Triscone, University of Geneva, Switzerland |
| Correspondent: | Click to Email |
Electronic states with unusual properties can be promoted at interfaces between complex oxides [1]. A striking example is the interface between the band insulators LaAlO3 and SrTiO3, which displays conductivity with high mobility and 2D superconductivity [2,3]. We will discuss recent experiments that revealed the sensitivity of the normal and superconducting state to external electric fields. Using the electrostatic field effect, the phase diagram of the system has been mapped out, revealing a quantum phase transition between a superconducting state and an insulating state [4]. We will also lay out an example of an electronic property arising from the interfacial breaking of inversion symmetry, namely a large spin-orbit interaction, whose magnitude can be modulated by the application of an external electric field [5].
[1] E. Dagotto, Science 318, 1076 (2007)
[2] A. Ohtomo, H. Y. Hwang Nature 427, 423 (2004)
[3] N. Reyren, S. Thiel, A. D. Caviglia, L. F. Kourkoutis, G. Hammerl, C. Richter, C. W. Schneider, T. Kopp, A.-S. Ruetschi, D. Jaccard, M Gabay, D. A. Muller, J.-M Triscone, J Mannhart Science 317, 1196 (2007).
[4] A. D. Caviglia, S. Gariglio, N. Reyren, D. Jaccard, T. Schneider, M Gabay, S. Thiel, G. Hammerl, J. Mannhart, J.-M Triscone Nature 456, 624 (2008).
[5] A. D. Caviglia, M Gabay, S. Gariglio, N. Reyren, C. Cancellieri, J.-M Triscone Phys. Rev. Lett. 104, 126803 (2010).