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Strain-induced large spin splitting and persistent spin helix at LaAlO$_3$/SrTiO$_3$ interface
- Source :
- Applied Physics Express 10, 123003 (2017)
- Publication Year :
- 2017
-
Abstract
- We investigated the effect of the tensile strain on the spin splitting at the n-type interface in LaAlO$_3$/SrTiO$_3$ in terms of the spin-orbit coupling coefficient $\alpha$ and spin texture in the momentum space using first-principles calculations. We found that the $\alpha$ could be controlled by the tensile strain and be enhanced up to 5 times for the tensile strain of 7%, and the effect of the tensile strain leads to a persistent spin helix, which has a long spin lifetime. These results support that the strain effect on LaAlO$_3$/SrTiO$_3$ is important for various applications such as spinFET and spin-to-charge conversion.<br />Comment: 3 pages, 3 figures, corrected typographical errors and misleading expressions
- Subjects :
- Condensed Matter - Materials Science
Subjects
Details
- Database :
- arXiv
- Journal :
- Applied Physics Express 10, 123003 (2017)
- Publication Type :
- Report
- Accession number :
- edsarx.1709.08335
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.7567/APEX.10.123003