Torque magnetometry of an amorphous-alumina/strontium-titanate interface

Tomarken, S. L.; Young, A. F.; Lee, S. W.; Gordon, R. G.; Ashoori, R. C.

doi:10.1103/physrevb.90.201113

Torque magnetometry of an amorphous-alumina/strontium-titanate interface

Journal Article · Sat Nov 01 00:00:00 EDT 2014 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/physrevb.90.201113· OSTI ID:1505752

Tomarken, S. L. ^[1]; Young, A. F. ^[2]; Lee, S. W. ^[3]; Gordon, R. G. ^[3]; Ashoori, R. C. ^[2]

Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Physics; MIT
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Physics
Harvard Univ., Cambridge, MA (United States). Dept. of Chemistry and Chemical Biology

Here, we report torque magnetometry measurements of an oxide heterostructure consisting of an amorphous Al₂O₃ thin film grown on a crystalline SrTiO₃ substrate (α -AO/STO) by atomic layer deposition. We find a torque response that resembles previous studies of crystalline LaAlO₃/SrTiO₃ (LAO/STO) heterointerfaces, consistent with strongly anisotropic magnetic ordering in the plane of the interface. Unlike crystalline LAO, amorphous Al₂O₃ is nonpolar, indicating that planar magnetism at an oxide interface is possible without the strong internal electric fields generated within the polarization catastrophe model. We discuss our results in the context of current theoretical efforts to explain magnetism in crystalline LAO/STO.

View Accepted Manuscript (DOE)

Research Organization:: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Sponsoring Organization:: Gordon and Betty Moore Foundation (GBMF); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: FG02-08ER46514

OSTI ID:: 1505752

Alternate ID(s):: OSTI ID: 1181027

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 20 Vol. 90; ISSN 1098-0121; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (20)

Structure-Property Relation of SrTiO₃/LaAlO₃ Interfaces Huijben, Mark; Brinkman, Alexander; Koster, Gertjan Advanced Materials, Vol. 21, Issue 17, p. 1665-1677 https://doi.org/10.1002/adma.200801448	journal	May 2009
Creation and Control of Two-Dimensional Electron Gas Using Al-Based Amorphous Oxides/SrTiO ₃ Heterostructures Grown by Atomic Layer Deposition Lee, Sang Woon; Liu, Yiqun; Heo, Jaeyeong Nano Letters, Vol. 12, Issue 9 https://doi.org/10.1021/nl302214x	journal	January 2012
A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface Ohtomo, A.; Hwang, H. Y. Nature, Vol. 427, Issue 6973 https://doi.org/10.1038/nature02308	journal	January 2004
Electronic phase separation at the LaAlO3/SrTiO3 interface No authors listed Nature Communications, Vol. 2, Issue 1 https://doi.org/10.1038/ncomms1192	journal	February 2011
A polarity-induced defect mechanism for conductivity and magnetism at polar–nonpolar oxide interfaces Yu, Liping; Zunger, Alex Nature Communications, Vol. 5, Issue 1 https://doi.org/10.1038/ncomms6118	journal	October 2014
Why some interfaces cannot be sharp Nakagawa, Naoyuki; Hwang, Harold Y.; Muller, David A. Nature Materials, Vol. 5, Issue 3, p. 204-209 https://doi.org/10.1038/nmat1569	journal	January 2006
Magnetic effects at the interface between non-magnetic oxides Brinkman, A.; Huijben, M.; van Zalk, M. Nature Materials, Vol. 6, Issue 7, p. 493-496 https://doi.org/10.1038/nmat1931	journal	June 2007
Titanium dx y ferromagnetism at the LaAlO3/SrTiO3 interface Lee, J. -S.; Xie, Y. W.; Sato, H. K. Nature Materials, Vol. 12, Issue 8 https://doi.org/10.1038/nmat3674	journal	June 2013
Direct imaging of the coexistence of ferromagnetism and superconductivity at the LaAlO₃/SrTiO₃ interface Bert, Julie A.; Kalisky, Beena; Bell, Christopher Nature Physics, Vol. 7, Issue 10, p. 767-771 https://doi.org/10.1038/nphys2079	journal	September 2011
Coexistence of magnetic order and two-dimensional superconductivity at LaAlO₃/SrTiO₃ interfaces Li, Lu; Richter, C.; Mannhart, J. Nature Physics, Vol. 7, Issue 10, p. 762-766 https://doi.org/10.1038/nphys2080	journal	September 2011
Ferromagnetic exchange, spin–orbit coupling and spiral magnetism at the LaAlO3/SrTiO3 interface Banerjee, Sumilan; Erten, Onur; Randeria, Mohit Nature Physics, Vol. 9, Issue 10 https://doi.org/10.1038/nphys2702	journal	August 2013
Origin of the self-limited electron densities at Al2O3/SrTiO3 heterostructures grown by atomic layer deposition – oxygen diffusion model Lee, Sang Woon; Heo, Jaeyeong; Gordon, Roy G. Nanoscale, Vol. 5, Issue 19 https://doi.org/10.1039/c3nr03082b	journal	January 2013
Oxygen vacancies at titanate interfaces: Two-dimensional magnetism and orbital reconstruction Pavlenko, N.; Kopp, T.; Tsymbal, E. Y. Physical Review B, Vol. 86, Issue 6 https://doi.org/10.1103/PhysRevB.86.064431	journal	August 2012
Magnetic and superconducting ordering in one-dimensional nanostructures at the LaAlO 3 /SrTiO 3 interface Fidkowski, Lukasz; Jiang, Hong-Chen; Lutchyn, Roman M. Physical Review B, Vol. 87, Issue 1 https://doi.org/10.1103/PhysRevB.87.014436	journal	January 2013
Coexistence of Superconductivity and Ferromagnetism in Two Dimensions Dikin, D. A.; Mehta, M.; Bark, C. W. Physical Review Letters, Vol. 107, Issue 5, Article No. 056802 https://doi.org/10.1103/PhysRevLett.107.056802	journal	July 2011
Upper Limit to Magnetism in LaAlO 3 / SrTiO 3 Heterostructures Fitzsimmons, M. R.; Hengartner, N. W.; Singh, S. Physical Review Letters, Vol. 107, Issue 21 https://doi.org/10.1103/PhysRevLett.107.217201	journal	November 2011
Superconducting and Ferromagnetic Phases in SrTiO 3 / LaAlO 3 Oxide Interface Structures: Possibility of Finite Momentum Pairing Michaeli, Karen; Potter, Andrew C.; Lee, Patrick A. Physical Review Letters, Vol. 108, Issue 11 https://doi.org/10.1103/PhysRevLett.108.117003	journal	March 2012
Origin of Interface Magnetism in BiMnO 3 / SrTiO 3 and LaAlO 3 / SrTiO 3 Heterostructures Salluzzo, M.; Gariglio, S.; Stornaiuolo, D. Physical Review Letters, Vol. 111, Issue 8 https://doi.org/10.1103/PhysRevLett.111.087204	journal	August 2013
Oxide Interfaces--An Opportunity for Electronics Mannhart, J.; Schlom, D. G. Science, Vol. 327, Issue 5973, p. 1607-1611 https://doi.org/10.1126/science.1181862	journal	March 2010
Two-Dimensional Electron Gases at Oxide Interfaces Mannhart, J.; Blank, D. H. A.; Hwang, H. Y. MRS Bulletin, Vol. 33, Issue 11 https://doi.org/10.1557/mrs2008.222	journal	November 2008

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Torque magnetometry of an amorphous-alumina/strontium-titanate interface

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