A.B. McLean, R.H. Williams
Journal of Physics C: Solid State Physics
The surface band gap of the Ge (111) c (2×8) surface at low temperature is determined on the basis of scanning tunneling spectroscopy. Electrostatic potential computations permit evaluation of tip-induced band bending, from which a correction to the energy scale of the observed spectra is made. Parameter values in the computations are constrained by comparison of the observed spectrum with known spectral features, including high-lying conduction band features derived from first-principles computations. The surface band gap, lying between the bulk valence band maximum and the minimum of an adatom-induced surface band, is found to have a width of 0.49±0.03 eV. © 2006 The American Physical Society.
A.B. McLean, R.H. Williams
Journal of Physics C: Solid State Physics
Michael Ray, Yves C. Martin
Proceedings of SPIE - The International Society for Optical Engineering
P. Martensson, R.M. Feenstra
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989