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arXiv · 1103.3220

Large tuneable Rashba spin splitting of a two-dimensional electron gas in Bi2Se3

P. D. C. King·R. C. Hatch·M. Bianchi·R. Ovsyannikov·C. Lupulescu·G. Landolt·B. Slomski·J. H. Dil·D. Guan·J. L. Mi·E. D. L. Rienks·J. Fink·A. Lindblad·S. Svensson·S. Bao·G. Balakrishnan·B. B. Iversen·J. Osterwalder·W. Eberhardt·F. Baumberger·Ph. Hofmann
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Abstract

We report a Rashba spin splitting of a two-dimensional electron gas in the topological insulator Bi$_2$Se$_3$ from angle-resolved photoemission spectroscopy. We further demonstrate its electrostatic control, and show that spin splittings can be achieved which are at least an order-of-magnitude larger than in other semiconductors. Together these results show promise for the miniaturization of spintronic devices to the nanoscale and their operation at room temperature.

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P. D. C. King, R. C. Hatch, M. Bianchi, R. Ovsyannikov, C. Lupulescu, G. Landolt, B. Slomski, J. H. Dil, D. Guan, J. L. Mi, E. D. L. Rienks, J. Fink, A. Lindblad, S. Svensson, S. Bao, G. Balakrishnan, B. B. Iversen, J. Osterwalder, W. Eberhardt, F. Baumberger, Ph. Hofmann. 2011-08-26. Large tuneable Rashba spin splitting of a two-dimensional electron gas in Bi2Se3. https://doi.org/10.1103/physrevlett.107.096802

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