Fig. 1 Electronic band structure of undoped Bi2Se3 measured by ARPES. (A) The bulk conduction band (BCB), bulk valence band (BVB), and surface-state band (SSB) are indicated,

along with the Fermi energy (EF), the bottom of the BCB (EB), and the Dirac point (ED).

Y L Chen et al. Science 2010;329:659-662

Published by AAAS