Large tunable Rashba spin splitting of a two-dimensional electron gas in Bi2Se3
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We report a Rashba spin splitting of a two-dimensional electron gas in the topological insulator Bi2Se3 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.
King , P , Hatch , R C , Bianchi , M , Ovsyannikov , R , Lupulescu , C , Landolt , G , Slomski , B , Dil , J H , Guan , D , Mi , J L , Rienks , E D L , Fink , J , Lindblad , A , Svensson , S , Bao , S , Balakrishnan , G , Iversen , B B , Osterwalder , J , Eberhardt , W , Baumberger , F & Hofmann , P 2011 , ' Large tunable Rashba spin splitting of a two-dimensional electron gas in Bi 2 Se 3 ' Physical Review Letters , vol. 107 , no. 9 , 096802 . DOI: 10.1103/PhysRevLett.107.096802
Physical Review Letters
© 2011 American Physical Society
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