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

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

2011-03-16

arxiv.org/abs/1103.3220v2

Phys. Rev. Lett. 107 (2011) 096802

Physics

Condensed Matter

Materials Science

5 pages, 4 figures. Substantially revised

Scientific paper

10.1103/PhysRevLett.107.096802

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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