Determination of Total Energy Tight Binding Parameters from First Principles Calculations Using Adaptive Simulated Annealing
Keyword(s):
AbstractEmpirical Total Energy Tight Binding (TETB) has proven to be a fast and accurate method for calculating materials properties for various system, including bulk, surface and amorphous structures. The determination of the tight binding parameters from first-principles results is a multivariate, non-linear optimization problem with multiple local minima. Simulated annealing is an optimization method which is flexible and “guaranteed” to find a global minimum, opposed to classical methods like non-linear least squares algorithms. As an example results are presented for a nonorthogonal s,p parameterization for Silicon based on the NRL tight binding formalism.
2017 ◽
Vol 1
(2)
◽
pp. 82
◽
2009 ◽
Vol 48
(3)
◽
pp. 1464-1467
◽