Conductance through analytic constrictions

Details Conductance through analytic constrictions Conductance through analytic constrictions

2008-08-27

arxiv.org/abs/0808.3670v1

Physics

Condensed Matter

Materials Science

7 pages, 12 figures

Scientific paper

10.1140/epjb/e2009-00072-0

We study the dependence of the intrinsic conductance of a nanocontact on its shape by using the recursion-transfer-matrix method. Hour-glass, torus, and spherical shapes are defined through analytic potentials, the latter two serving as rough models for ring-like and spherical molecules, respectively. The sensitivity of the conductance to geometric details is analyzed and discussed. Strong resonance effects are found for a spherical contact weakly coupled to electron reservoirs.

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