Continuous transition from two- to one-dimensional states in Si(111)-( 5x2)-Au
A strong, gold-induced surface state is found on single-domain Si(111)-(5x2)-Au at low temperatures. Its band dispersion is one dimensional near the Fermi level E(F) and gradually becomes two dimensional towards the bottom of the band, thus providing a model for a continuous transition in dimensionality. A Peierls-like gap is observed in the one-dimensional portion of the band near E(F).
Losio
R
Department of Physics, UW-Madison, 1150 University Avenue, Madison, Wisconsin 53706 and Synchrotron Radiation Center (SRC), 3731 Schneider Drive, Stoughton, Wisconsin 53589, USA.
Altmann
KN
Himpsel
FJ