Anomalous magneto-transport at the superconducting interface between LaAlO3 and SrTiO3
M. Sachs, D. Rakhmilevitch, M. Ben Shalom, S. Shefler, A. Palevski, Y., Dagan
TL;DR
This paper reports on the unusual anisotropic magnetoresistance observed at the superconducting interface between LaAlO3 and SrTiO3, suggesting the presence of magnetic order at low temperatures.
Contribution
It provides new insights into the magneto-transport properties and magnetic phenomena occurring at the LaAlO3/SrTiO3 interface.
Findings
Anomalous anisotropic magnetoresistance below 30 K
Magnetic order likely forms at the interface
Superconducting samples show distinct magneto-transport behavior
Abstract
The magnetoresistance as a function of temperature and field for atomically flat interfaces between 8 unit cells of LaAlO3 and SrTiO3 is reported. Anomalous anisotropic behavior of the magnetoresistance is observed below 30 K for superconducting samples with carrier concentration of 3.5\times10^13 cm^-2 . We associate this behavior to a magnetic order formed at the interface.
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