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The DFTB approach merges the spirit and reliability of DFT with the simplicity and efficiency of TB ansatz. While minimizing both the computational cost and the number of parameters, this method offers a high degree of transferability as well as universality for both ground-state and excited-state properties. DFTB operates with the same accuracy and efficiency for organic molecules, solids, clusters, insulators, semi-conductors, and metals, even biomolecular systems are investigated. Use of DFTB is independent of the type of atoms which constitute the material (Frauenheim et al., 2002).
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8Â¥: Originally posted by jiewei at 2014-05-09 09:20:34
The DFTB approach merges the spirit and reliability of DFT with the simplicity and efficiency of TB ansatz. While minimizing both the computational cost and the number of parameters, this method off ...

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