Interplay between sheet resistance increase and magnetotransport properties in $\mathrm{LaAl}{\mathrm{O}}_3/\mathrm{SrTi}{\mathrm{O}}_3$

Abstract

We find that the sheet resistance ($R_s$) of patterned samples of $\mathrm{LaAl}{\mathrm{O}}_3/\mathrm{SrTi}{\mathrm{O}}_3$ with a length scale of several microns may increase significantly at low temperatures in connection with driving electrical currents and applying in-plane magnetic fields. As the samples are warmed up, $R_s$ recovers to its original value with accelerated recovery near $70\mathrm{K}$ and $160\mathrm{K}$. Concomitantly with the increase in $R_s$, the carrier density and the mobility decrease and magnetotransport properties which may be linked to magnetism are suppressed.

6 pages, 6 figures

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Cited by in corpus (6)

• Physics of SrTiO${}_3$-based heterostructures and nanostructures: a review
• Anisotropic transport at the LaAlO3/SrTiO3 interface explained by microscopic imaging of channel-flow over SrTiO3 domains
• Competition Between Kondo Screening and Magnetism at the LaAlO${}_3$/SrTiO${}_3$ Interface
• Unconventional dc transport in Rashba electron gases
• Thermally activated recovery of electrical conductivity in LaAlO3/SrTiO3
• Current-induced nonuniform enhancement of sheet resistance in Ar+ irradiated SrTiO3