by Salluzzo, M., Gariglio, S., Stornaiuolo, D., Sessi, V. and Rusponi, S., Piamonteze, C., De Luca, G. M., Minola, M. and Marre, D., Gadaleta, A., Brune, H., Nolting, F., Brookes, N. B. and Ghiringhelli, G.
Abstract:
Possible ferromagnetism induced in otherwise nonmagnetic materials has been motivating intense research in complex oxide heterostructures. Here we show that a confined magnetism is realized at the interface between SrTiO3 and two insulating polar oxides, BiMnO3 and LaAlO3. By using polarization dependent x-ray absorption spectroscopy, we find that in both cases the magnetism can be stabilized by a negative exchange interaction between the electrons transferred to the interface and local magnetic moments. These local magnetic moments are associated with magnetic Ti3+ ions at the interface itself for LaAlO3/SrTiO3 and to Mn3+ ions in the overlayer for BiMnO3/SrTiO3. In LaAlO3/SrTiO3 the induced magnetism is quenched by annealing in oxygen, suggesting a decisive role of oxygen vacancies in this phenomenon.
Reference:
Origin of Interface Magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3 Heterostructures (Salluzzo, M., Gariglio, S., Stornaiuolo, D., Sessi, V. and Rusponi, S., Piamonteze, C., De Luca, G. M., Minola, M. and Marre, D., Gadaleta, A., Brune, H., Nolting, F., Brookes, N. B. and Ghiringhelli, G.), In PHYSICAL REVIEW LETTERS, AMER PHYSICAL SOC, volume 111, 2013.
Bibtex Entry:
@article{ ISI:000323490300010,
Author = {Salluzzo, M. and Gariglio, S. and Stornaiuolo, D. and Sessi, V. and
Rusponi, S. and Piamonteze, C. and De Luca, G. M. and Minola, M. and
Marre, D. and Gadaleta, A. and Brune, H. and Nolting, F. and Brookes, N.
B. and Ghiringhelli, G.},
Title = {{Origin of Interface Magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3
Heterostructures}},
Journal = {{PHYSICAL REVIEW LETTERS}},
Year = {{2013}},
Volume = {{111}},
Number = {{8}},
Month = {{AUG 22}},
Abstract = {{Possible ferromagnetism induced in otherwise nonmagnetic materials has
been motivating intense research in complex oxide heterostructures. Here
we show that a confined magnetism is realized at the interface between
SrTiO3 and two insulating polar oxides, BiMnO3 and LaAlO3. By using
polarization dependent x-ray absorption spectroscopy, we find that in
both cases the magnetism can be stabilized by a negative exchange
interaction between the electrons transferred to the interface and local
magnetic moments. These local magnetic moments are associated with
magnetic Ti3+ ions at the interface itself for LaAlO3/SrTiO3 and to Mn3+
ions in the overlayer for BiMnO3/SrTiO3. In LaAlO3/SrTiO3 the induced
magnetism is quenched by annealing in oxygen, suggesting a decisive role
of oxygen vacancies in this phenomenon.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Salluzzo, M (Corresponding Author), CNR SPIN, Complesso MonteSantangelo Via Cinthia, I-80126 Naples, Italy.
Salluzzo, M.; De Luca, G. M., CNR SPIN, I-80126 Naples, Italy.
Gariglio, S.; Stornaiuolo, D., Univ Geneva, Dept Phys Mat Condensee, CH-1211 Geneva 4, Switzerland.
Sessi, V.; Brookes, N. B., European Synchrotron Radiat Facil, F-38043 Grenoble, France.
Rusponi, S.; Brune, H., Ecole Polytech Fed Lausanne, Inst Condensed Matter Phys, CH-1015 Lausanne, Switzerland.
Piamonteze, C.; Nolting, F., Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland.
Minola, M.; Ghiringhelli, G., CNR SPIN, I-20133 Milan, Italy.
Minola, M.; Ghiringhelli, G., Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy.
Marre, D.; Gadaleta, A., CNR SPIN, I-14146 Genoa, Italy.
Marre, D.; Gadaleta, A., Univ Genoa, Dipartimento Fis, I-14146 Genoa, Italy.}},
DOI = {{10.1103/PhysRevLett.111.087204}},
Article-Number = {{087204}},
ISSN = {{0031-9007}},
EISSN = {{1079-7114}},
Keywords-Plus = {{FERROMAGNETISM; SUPERCONDUCTIVITY; COEXISTENCE; DICHROISM}},
Research-Areas = {{Physics}},
Web-of-Science-Categories = {{Physics, Multidisciplinary}},
Author-Email = {{marco.salluzzo@spin.cnr.it
giacomo.ghiringhelli@polimi.it}},
ResearcherID-Numbers = {{Nolting, Frithjof/J-4820-2017
Piamonteze, Cinthia/E-9740-2016
salluzzo, marco/C-5919-2009
Brookes, Nicholas B/C-6718-2019
Brune, Harald/E-7284-2017
stornaiuolo, daniela/D-2516-2014
Ghiringhelli, Giacomo/D-1159-2014
Marre, Daniele/G-5965-2014
}},
ORCID-Numbers = {{Nolting, Frithjof/0000-0002-5679-5370
salluzzo, marco/0000-0001-8372-6963
Brookes, Nicholas B/0000-0002-1342-9530
Brune, Harald/0000-0003-4459-3111
Ghiringhelli, Giacomo/0000-0003-0867-7748
Marre, Daniele/0000-0002-6230-761X
STORNAIUOLO, Daniela/0000-0003-2654-9504
Rusponi, Stefano/0000-0002-8494-5532
Minola, Matteo/0000-0003-4084-0664}},
Funding-Acknowledgement = {{European UnionEuropean Union (EU) {[}264098-MAMA]; Italian MIURMinistry
of Education, Universities and Research (MIUR) {[}PRIN 20094W2LAY]}},
Funding-Text = {{The authors are grateful to Jean-Marc Triscone, Jochen Mannhart, and
Mathieu Le Tacon for useful discussions. We also acknowledge P. Zubko
for the characterization of BiMnO<INF>3</INF>/SrTiO<INF>3</INF> films.
This research was funded by the European Union Seventh Framework Program
under Grant Agreement No. 264098-MAMA and from the Italian MIUR Grant
No. PRIN 20094W2LAY.}},
Number-of-Cited-References = {{32}},
Times-Cited = {{120}},
Usage-Count-Last-180-days = {{9}},
Usage-Count-Since-2013 = {{169}},
Journal-ISO = {{Phys. Rev. Lett.}},
Doc-Delivery-Number = {{206BG}},
Unique-ID = {{ISI:000323490300010}},
OA = {{Green Accepted}},
DA = {{2020-12-22}},
}
Comments are closed