Enhanced spin-orbit coupling and charge carrier density suppression in LaAl1-xCrxO3/SrTiO3 heterointerfaces

Abstract

We report a gradual suppression of the two-dimensional electron gas (2DEG) at the LaAlO3/SrTiO3 interface on substitution of chromium at the Al sites. The sheet carrier density at the interface (ns) drops monotonically from 2.2x10(14) cm-2 to 2.5x10(13) cm-2 on replacing nearly 60 percent of Al sites by Cr and the sheet resistance (Rs) exceeds the quantum limit for localization (h/2e2) in the concentrating range 40 to 60 percent of Cr.

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Cited by in corpus (8)

• Effect of disorder on superconductivity and Rashba spin-orbit coupling in LaAlO3/SrTiO3 interfaces
• Correlated Non-Gaussian phase fluctuations in LaAlO${}_3$/SrTiO${}_3$ heterointerface
• Signature of enhanced spin-orbit interaction in the magnetoresistance of LaTiO${}_3$/SrTiO${}_3$ interfaces on $\delta$-doping
• Large Negative Magnetoresistance in Antiferromagnetic Gd2Se3
• Observation of transient superconductivity at the LaAlO${}_3$/SrTiO${}_3$ interface
• Effect of multiband transport on charge carrier density fluctuations at the LaAlO${}_3$/SrTiO${}_3$ interface
• Effect of spin-orbit interaction on the vortex dynamics in LaAlO${}_3$/SrTiO${}_3$ interfaces near the superconducting transition
• Anisotropic magnetotransport in LaAlO${}_3$/SrTiO${}_3$ nanostructures