%0 Journal Article
%T Tunable spin polarization and superconductivity in engineered oxide interfaces
%+ Laboratoire Charles Coulomb (L2C)
%A Stornaiuolo, D.
%A Cantoni, C.
%A de Luca, G. M.
%A Di Capua, R.
%A Di Gennaro, E.
%A Ghiringhelli, G.
%A Jouault, Benoit
%A Marre, D.
%A Massarotti, D.
%A Granozio, F. Miletto
%A Pallecchi, I.
%A Piamonteze, C.
%A Rusponi, S.
%A Tafuri, F.
%A Salluzzo, M.
%< avec comité de lecture
%Z L2C:16-026
%@ 1476-1122
%J Nature Materials
%I Nature Publishing Group
%V 15
%N 3
%P 278-+
%8 2016-03
%D 2016
%R 10.1038/NMAT4491
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X Advances in growth technology of oxide materials allow single atomic layer control of heterostructures. In particular delta doping, a key materials’ engineering tool in today’s semiconductor technology, is now also available for oxides. Here we show that a fully electric-field-tunable spin-polarized and superconducting quasi-2D electron system (q2DES) can be artificially created by inserting a few unit cells of delta doping EuTiO3 at the interface between LaAlO3 and SrTiO3 oxides1, 2. Spin polarization emerges below the ferromagnetic transition temperature of the EuTiO3 layer (TFM = 6–8 K) and is due to the exchange interaction between the magnetic moments of Eu-4f and of Ti-3d electrons. Moreover, in a large region of the phase diagram, superconductivity sets in from a ferromagnetic normal state. The occurrence of magnetic interactions, superconductivity and spin–orbit coupling in the same q2DES makes the LaAlO3/EuTiO3/SrTiO3 system an intriguing platform for the emergence of novel quantum phases in low-dimensional materials.
%G English
%L hal-01296509
%U https://hal.science/hal-01296509
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021