Grand-Canonical Quantized Liquid Density-Functional Theory in a Car-Parrinello Implementation

Autor:	Walther, Christian F. J., Patchkovskii, Serguei, Heine, Thomas
Rok vydání:	2013
Předmět:	Condensed Matter - Materials Science Physics - Chemical Physics
Zdroj:	J. Chem. Phys. 139 (2013) 034110
Druh dokumentu:	Working Paper
DOI:	10.1063/1.4813122
Popis:	Quantized Liquid Density-Functional Theory [Phys. Rev. E 2009, 80, 031603], a method developed to assess the adsorption of gas molecules in porous nanomaterials, is reformulated within the grand canonical ensemble. With the grand potential it is possible to compare directly external and internal thermodynamic quantities. In our new implementation, the grand potential is minimized utilizing the Car-Parrinello approach and gives, in particular for low temperature simulations, a significant computational advantage over the original canonical approaches. The method is validated against original QLDFT, and applied to model potentials and graphite slit pores. Comment: 19 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1305.1743 Zobrazit plný text záznamu View this record from Arxiv