Exact calculation of the current in a one-dimension model of a scanning tunneling microscopeстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Electric current as a function of applied voltage have been calculated between two one-dimensional semi-infinite atomic chains. A tight-binding two band model and the modified tight-binding equations technique have been used. The current derivatives are compared with the surface local density of states. The comparison shows that the current derivatives reproduce the local density of states with a significant distortion. It occurs due to wave vector dependence of the transmission coefficient of electronic waves falling on the interface between the chains.