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

doi:10.1088/0953-8984/27/12/125007

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

Strongly Correlated Electrons 2015-06-23 v1 Materials Science

Authors: 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.

Keywords

LaAlO3/SrTiO3 interface two-dimensional electron gas chromium substitution carrier density suppression spin-orbit coupling sheet resistance quantum limit for localization heterointerfaces

Cite

@article{arxiv.1410.0876,
  title  = {Enhanced spin-orbit coupling and charge carrier density suppression in LaAl1-xCrxO3/SrTiO3 heterointerfaces},
  author = {Pramod Kumar and Anjana Dogra and P. P. S. Bhadauria and Anurag Gupta and K. K. Maurya and R. C. Budhani},
  journal= {arXiv preprint arXiv:1410.0876},
  year   = {2015}
}

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

Abstract

Keywords

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