Michael Ray, Yves C. Martin
Proceedings of SPIE - The International Society for Optical Engineering
We present a method for interpreting scanning tunneling microscope (STM) images of surfaces, and apply this method to the Si(111)2 × 1 surface. We demonstrate how the STM does not directly image the atoms on a surface. Rather, the images reveal the spatial distribution of those electronic states lying near the Fermi-level. For semiconductors, a given wave-function is often preferentially localized on specific atoms or bonds. A lowest order interpretation of the images thus requires a description of the surface wave-functions, and a simple method for qualitatively constructing the wave-functions is illustrated here. Using this method, we demonstrate that STM images of the Si(111)2 × 1 surface are consistent with the Π-bonded chain model for this surface, and inconsistent with the Π-bonded molecular model and the buckled model. © IOP Publishing Ltd.
Michael Ray, Yves C. Martin
Proceedings of SPIE - The International Society for Optical Engineering
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
Mark W. Dowley
Solid State Communications
Frank R. Libsch, Takatoshi Tsujimura
Active Matrix Liquid Crystal Displays Technology and Applications 1997