Institute of Computational and Theoretical Studies
Theory of low-energy electron diffraction for detailed structural determination of nanomaterials: Finite-size and disordered structures
We describe how a recent efficient theory of low-energy electron diffraction (LEED) enables the determination of finite-size and disordered nanostructures. Our cluster approach, called NANOLEED, speeds up the computation to scale as n log n, rather than the usual n3 or n2, with n the number of atoms, for example, thereby making nanostructures accessible. To illustrate this method's capability to determine nanoscale structure, we apply it to calculate LEED intensities for Si nanowires of various lengths and thicknesses as well as for various deviations of these nanowires from the ideal Si bulk structure. © 2007 The American Physical Society.
Source Publication Title
Physical Review B - Condensed Matter and Materials Physics
American Physical Society
Gavaza, G. M., Z. X. Yu, L. Tsang, C. H. Chan, S. Y. Tong, and M. A. Van Hove. "Theory of low-energy electron diffraction for detailed structural determination of nanomaterials: Finite-size and disordered structures." Physical Review B - Condensed Matter and Materials Physics 75.23 (2007).