Theoretical study of conductance in stretched monatomic nanowires

SURFACE SCIENCE

卷:547

Article

Picaud, F ; Pouthier, V ; Girardet, C ; Tosatti, E

关键词: gold;    Green's function methods;    surface electrical transport (surface conductivity;    surface recombination, etc.);   

DOI  :  10.1016/j.susc.2003.10.040

来源: Elsevier

【 摘 要 】

Recent experiments showed that the last, single channel conductance step in monatomic gold contacts exhibits significant fluctuations as a function of stretching. From simulations of a stretched gold nanowire linked to deformable tips, we determine the distribution of the bond lengths between atoms forming the nanocontact and analyze its influence on the electronic conductance within a simplified single channel approach. We show that the inhomogeneous distribution of bond lengths can explain the occurrence and the 5% magnitude of conductance fluctuations below the quantum conductance unit g(0) = 2e(2)/h. (C) 2003 Elsevier B.V. All rights reserved.

【 授权许可】

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