Localized basis sets for unbound electrons in nanoelectronics

Details Localized basis sets for unbound electrons in nanoelectronics Localized basis sets for unbound electrons in nanoelectronics

2007-12-20

arxiv.org/abs/0712.3561v1

J. Chem. Phys. 128, 074108 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 5 figures, accepted by J. Chem. Phys. (http://jcp.aip.org/)

Scientific paper

10.1063/1.2831550

It is shown how unbound electron wave functions can be expanded in a suitably chosen localized basis sets for any desired range of energies. In particular, we focus on the use of gaussian basis sets, commonly used in first-principles codes. The possible usefulness of these basis sets in a first-principles description of field emission or scanning tunneling microscopy at large bias is illustrated by studying a simpler related phenomenon: The lifetime of an electron in a H atom subjected to a strong electric field.

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