Conductance of a tunnel point-contact of noble metals in the presence of a single defect

Details Conductance of a tunnel point-contact of noble metals in the presence of a single defect Conductance of a tunnel point-contact of noble metals in the presence of a single defect

2007-10-23

arxiv.org/abs/0710.4210v1

Low Temp. Phys., 34, No.3, 207-210 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 5 figures

Scientific paper

10.1063/1.2889410

In paper [1] (Avotina et al. Phys. Rev. B,74, 085411 (2006)) the effect of Fermi surface anisotropy to the conductance of a tunnel point contact, in the vicinity of which a single point-like defect is situated, has been investigated theoretically. The oscillatory dependence of the conductance on the distance between the contact and the defect has been found for a general Fermi surface geometry. In this paper we apply the method developed in [1] to the calculation of the conductance of noble metal contacts. An original algorithm, which enables the computation of the conductance for any parametrically given Fermi surface, is proposed. On this basis a pattern of the conductance oscillations, which can be observed by the method of scanning tunneling microscopy, is obtained for different orientations of the surface for the noble metals.

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