Fermi surface of Bi(111) measured by photoemission spectroscopy -: art. no. 177602

Synchrotron radiation angle-resolved photoemission spectroscopy of Bi(111) shows that the Fermi surface consists of six elongated hole pockets along the ($) over bar directions surrounding a ring-shaped electron pocket centered at <()over bar>, all of which have two-dimensional character. The associated hole and electron sheet densities are p(s) = 1.1 x 10(13) cm(-2) and n(s) 5.5 x 10(12) cm(-2), respectively. A weak emission feature associated with the bulk hole pocket in the Fermi surface was identified. The Fermi momentum of the bulk hole band near the T point is k, = 0.013 +/- 0.003 Angstrom (-1).