by Stornaiuolo, D., Cantoni, C., De Luca, G. M., Di Capua, R. and Di Gennaro, E., Ghiringhelli, G., Jouault, B., Marre, D. and Massarotti, D., Granozio, F. Miletto, Pallecchi, I. and Piamonteze, C., Rusponi, S., Tafuri, F. and Salluzzo, M.
Abstract:
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 oxides(1,2). Spin polarization emerges below the ferromagnetic transition temperature of the EuTiO3 layer (T-FM = 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.
Reference:
Tunable spin polarization and superconductivity in engineered oxide interfaces (Stornaiuolo, D., Cantoni, C., De Luca, G. M., Di Capua, R. and Di Gennaro, E., Ghiringhelli, G., Jouault, B., Marre, D. and Massarotti, D., Granozio, F. Miletto, Pallecchi, I. and Piamonteze, C., Rusponi, S., Tafuri, F. and Salluzzo, M.), In NATURE MATERIALS, NATURE PUBLISHING GROUP, volume 15, 2016.
Bibtex Entry:
@article{ ISI:000370967400011, Author = {Stornaiuolo, D. and Cantoni, C. and De Luca, G. M. and Di Capua, R. and Di Gennaro, E. and Ghiringhelli, G. and Jouault, B. and Marre, D. and Massarotti, D. and Granozio, F. Miletto and Pallecchi, I. and Piamonteze, C. and Rusponi, S. and Tafuri, F. and Salluzzo, M.}, Title = {{Tunable spin polarization and superconductivity in engineered oxide interfaces}}, Journal = {{NATURE MATERIALS}}, Year = {{2016}}, Volume = {{15}}, Number = {{3}}, Pages = {{278+}}, Month = {{MAR}}, Abstract = {{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 oxides(1,2). Spin polarization emerges below the ferromagnetic transition temperature of the EuTiO3 layer (T-FM = 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.}}, Publisher = {{NATURE PUBLISHING GROUP}}, Address = {{MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND}}, Type = {{Article}}, Language = {{English}}, Affiliation = {{Stornaiuolo, D (Corresponding Author), Univ Naples Federico II, Dipartimento Fis, Complesso Monte Sant Angelo Via Cinthia, I-80126 Naples, Italy. Stornaiuolo, D; Salluzzo, M (Corresponding Author), CNR SPIN, Complesso Monte Sant Angelo Via Cinthia, I-80126 Naples, Italy. Stornaiuolo, D.; De Luca, G. M.; Di Capua, R.; Di Gennaro, E.; Massarotti, D., Univ Naples Federico II, Dipartimento Fis, Complesso Monte Sant Angelo Via Cinthia, I-80126 Naples, Italy. Stornaiuolo, D.; De Luca, G. M.; Di Capua, R.; Di Gennaro, E.; Massarotti, D.; Granozio, F. Miletto; Tafuri, F.; Salluzzo, M., CNR SPIN, Complesso Monte Sant Angelo Via Cinthia, I-80126 Naples, Italy. Cantoni, C., Oak Ridge Natl Lab, Mat Sci & Technol Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. Ghiringhelli, G., Politecn Milan, CNR SPIN, Piazza Leonardo Vinci 32, I-20133 Milan, Italy. Ghiringhelli, G., Politecn Milan, Dipartimento Fis, Piazza Leonardo Vinci 32, I-20133 Milan, Italy. Jouault, B., Univ Montpellier 2, CNRS, UMR 5221, Lab Charles Coulomb, F-34095 Montpellier, France. Marre, D.; Pallecchi, I., Univ Genoa, CNR SPIN, Via Dodecaneso 33, I-14146 Genoa, Italy. Marre, D.; Pallecchi, I., Univ Genoa, Dipartimento Fis, Via Dodecaneso 33, I-14146 Genoa, Italy. Piamonteze, C., Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland. Rusponi, S., Ecole Polytech Fed Lausanne, Inst Condensed Matter Phys, CH-1015 Lausanne, Switzerland. Tafuri, F., SUN, Dipartimento Ingn Informaz, I-81031 Aversa, CE, Italy.}}, DOI = {{10.1038/NMAT4491}}, ISSN = {{1476-1122}}, EISSN = {{1476-4660}}, Keywords-Plus = {{LAALO3/SRTIO3; COEXISTENCE; MAGNETISM; ELECTRONS}}, Research-Areas = {{Chemistry; Materials Science; Physics}}, Web-of-Science-Categories = {{Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter}}, Author-Email = {{daniela.stornaiuolo@fisica.unina.it marco.salluzzo@spin.cnr.it}}, ResearcherID-Numbers = {{Marre, Daniele/G-5965-2014 stornaiuolo, daniela/D-2516-2014 Tafuri, Francesco/D-8246-2018 Pallecchi, Ilaria/AAY-2184-2020 GRANOZIO, FABIO MILETTO/R-9662-2017 Di Gennaro, Emiliano/G-6311-2010 salluzzo, marco/C-5919-2009 Piamonteze, Cinthia/E-9740-2016 Di Capua, Roberto/G-9622-2012 Ghiringhelli, Giacomo/D-1159-2014 }}, ORCID-Numbers = {{Marre, Daniele/0000-0002-6230-761X Tafuri, Francesco/0000-0003-0784-1454 Pallecchi, Ilaria/0000-0001-6819-6124 GRANOZIO, FABIO MILETTO/0000-0002-9417-7848 Di Gennaro, Emiliano/0000-0003-4231-9776 salluzzo, marco/0000-0001-8372-6963 Di Capua, Roberto/0000-0003-3605-0993 Ghiringhelli, Giacomo/0000-0003-0867-7748 Massarotti, Davide/0000-0001-7495-362X jouault, benoit/0000-0002-2993-6916 Massarotti, Davide/0000-0001-5740-0054 Rusponi, Stefano/0000-0002-8494-5532}}, Funding-Acknowledgement = {{Ministero dell'Istruzione, dell'Universita e della RicercaMinistry of Education, Universities and Research (MIUR) {[}RBFR1236VV, RBAP115AYN, PRIN 2010-11-OXIDE]; US Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering DivisionUnited States Department of Energy (DOE); CNRSCentre National de la Recherche Scientifique (CNRS) {[}PICS-0754]}}, Funding-Text = {{We received funding from the Ministero dell'Istruzione, dell'Universita e della Ricerca for the FIRB 2012 project HybridNanoDev (Grant No. RBFR1236VV), FIRB 2011 project `Oxides at the nanoscale: multifunctionality and applications' (Grant No. RBAP115AYN) and for the PRIN 2010-11 project (Grant No. PRIN 2010-11-OXIDE). The X-ray absorption measurements were performed on the EPFL/PSI X-Treme beamline at the Swiss Light Source, Paul Scherrer Institut, Villigen, Switzerland. The research of C.C. was supported by the US Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division. The research of B.J. was supported by CNRS under PICS-0754.}}, Number-of-Cited-References = {{30}}, Times-Cited = {{55}}, Usage-Count-Last-180-days = {{7}}, Usage-Count-Since-2013 = {{220}}, Journal-ISO = {{Nat. Mater.}}, Doc-Delivery-Number = {{DE9OM}}, Unique-ID = {{ISI:000370967400011}}, DA = {{2020-12-22}}, }
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