Anisotropic magneto-transport effects at SrTiO3\LaAlO3 interfaces

The resistivity as a function of temperature, magnetic field and its orientation for atomically flat SrTiO3\LaAlO3 interfaces with carrier densities of ~3*10^13 cm^-2 is reported. At low magnetic fields superconductivity is observed below 130mK. The temperature dependence of the high field magnetore...

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Bibliographic Details
Published in:arXiv.org 2009-07
Main Authors: M Ben Shalom, Tai, C W, Lereah, Y, Sachs, M, Levy, E, Rakhmilevitch, D, Palevski, A, Dagan, Y
Format: Article
Language:English
Subjects:
Anisotropy
Carrier density
Magnetic fields
Magnetoresistance
Magnetoresistivity
Strontium titanates
Superconductivity
Temperature dependence
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Summary:The resistivity as a function of temperature, magnetic field and its orientation for atomically flat SrTiO3\LaAlO3 interfaces with carrier densities of ~3*10^13 cm^-2 is reported. At low magnetic fields superconductivity is observed below 130mK. The temperature dependence of the high field magnetoresistance and its strong anisotropy suggest possible magnetic ordering below 35K. The origin of this ordering and its possible relation to superconductivity are discussed.
ISSN:2331-8422
DOI:10.48550/arxiv.0902.2668