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arXiv · 1410.0876

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

Pramod Kumar·Anjana Dogra·P. P. S. Bhadauria·Anurag Gupta·K. K. Maurya·R. C. Budhani
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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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Pramod Kumar, Anjana Dogra, P. P. S. Bhadauria, Anurag Gupta, K. K. Maurya, R. C. Budhani. 2014-10-03. Enhanced spin-orbit coupling and charge carrier density suppression in LaAl1-xCrxO3/SrTiO3 heterointerfaces. https://doi.org/10.1088/0953-8984/27/12/125007

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