| AVS 61st International Symposium & Exhibition | |
| Magnetic Interfaces and Nanostructures | Monday Sessions |
| Session MI+EM-MoM |
| Session: | Interfacial Effects in Oxide Heterostructures |
| Presenter: | Stefano Gariglio, University of Geneva, Switzerland |
| Authors: | S. Gariglio, University of Geneva, Switzerland D. Li, University of Geneva, Switzerland A. Fête, University of Geneva, Switzerland W. Liu, University of Geneva, Switzerland J.-M. Triscone, University of Geneva, Switzerland |
| Correspondent: | Click to Email |
The conducting interface between the two band insulators LaAlO3 and SrTiO3 has drawn a large share of attention, as it presents a variety of exciting electronic properties that are tunable by an electric field [1].
At low temperatures, magnetotransport analysis has revealed a strong Rashba spin-orbit interaction originating from the breaking of inversion symmetry [2] and, in field effect devices, the ground state has been tuned from an insulating to a superconducting state. I will discuss these results in light of recent magnetotransport experiments in field-effect devices to probe the evolution across the phase diagram of the weak localization /weak anti-localization transport regime, its relation to the strength and anisotropy of the superconducting state.
Moreover, this interface naturally provides a versatile system to artificially build stacks of multiple 2D superconductors that would allow coupled 2D superconducting layers to be studied. I will show that we can prepare metallic and superconducting interfaces with LaAlO3 layers grown on an artificial SrTiO3 film [3].
[1] A. D. Caviglia et al., Nature 456, 624 (2008). [2] A. D. Caviglia et al., Phys. Rev. Lett. 104, 126803 (2010); A. Fête et al., Phys. Rev. B 86, 201105 (2012). [3] D. Li et al. Appl. Phys. Lett. Mat. 2, 012102 (2014).