Aging of the surface of Bi(2)Se(3)

Abstract

We study the electronic structure of Bi(2)Se(3) employing high resolution photoemission spectroscopy and discover the dependence of the behavior of Dirac particles on surface terminations. The Dirac cone apex appears at different energies and exhibits contrasting shift on Bi and Se terminated surface with complex time dependence emerging from subtle adsorbed oxygen-surface atom interactions. These results uncover the surface states behavior of real systems possessing topologically ordered surface.

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References in corpus (4)

• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Coexistence of the topological state and a two-dimensional electron gas on the surface of Bi2Se3
• Spin-orbit interaction effect in the electronic structure of \BiTe \ observed by angle-resolved photoemission spectroscopy
• Revelation of the role of impurities and conduction electron density in the high resolution photoemission study of ferromagnetic hexaborides