|
|||||
|
|
Theoretical study of conductance in stretched monatomic nanowires |
|
| Authors: | Fabien Picaud Vincent PouthierClaude Girardet Erio Tosatti |
| Affiliation: | a Laboratoire de Physique Moleculaire, UMR CNRS 6624, Faculté des sciences, La Bouloie, Université de Franche-Comté, 16 route de gray, 25030 Besançon, France b SISSA Via Beirut 2/4, 34014 Trieste, Italy c INFM Democritos National Simulation Center, INFM, Unità SIIS, Via Beirut 2/4, 34014 Trieste, Italy d ICTP, Strada Costiera 11, 34014 Trieste, Italy |
| Abstract: | 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 g0=2e2/h. |
| Keywords: | Gold Green&rsquo s function methods Surface electrical transport (surface conductivity, surface recombination, etc.) |
| 本文献已被 ScienceDirect 等数据库收录！ | |