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

Phil 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, Felix BaumbergerPh. Hofmann

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334 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number096802
Number of pages5
JournalPhysical Review Letters
Volume107
Issue number9
DOIs
Publication statusPublished - 25 Aug 2011

Keywords

  • Topological insulator
  • Effect transistor
  • Quantum-wells
  • Surface
  • State
  • Spectroscopy
  • Transport
  • Layers

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