Photoemission study of the carrier bands in Bi(111)
Institut de Physique, Université de Neuchâtel,
1 rue A.-L. Breguet, 2000 Neuchâtel, Switzerland
Published online: 15 October 2000
We present high-resolution photoemission data from the Bi(111)-surface. The electronic structure of the semimetal close to the Fermi level has been found to change dramatically with respect to the well established bulk band structure. The Fermi surfaces observed for the electron and hole bands resemble those of the next group-V element, antimony, probably as a consequence of surface relaxation. This results in a relatively high surface charge density. The observed temperature dependence of the electron Fermi energy confirms this result.
PACS: 79.60.-i – Photoemission and photoelectron spectra / 73.20.At – Surface states, band structure, electron density of states
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000