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arXiv · 0707.4187

Is Small Perfect? Size Limit to Defect Formation in Pyramidal Pt Nanocontacts

Varlei Rodrigues·Fernando Sato·Douglas S. Galvao·Daniel Ugarte
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Abstract

We report high resolution transmission electron microscopy and ab initio calculation results for the defect formation in Pt nanocontacts (NCs). Our results show that there is a size limit to the existence of twins (extended structural defects). Defects are always present but blocked away from the tip axes. The twins may act as scattering plane, influencing contact electron transmission for Pt NC at room temperature and Ag/Au NC at low temperature.

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Varlei Rodrigues, Fernando Sato, Douglas S. Galvao, Daniel Ugarte. 2007-07-27. Is Small Perfect? Size Limit to Defect Formation in Pyramidal Pt Nanocontacts. https://doi.org/10.1103/physrevlett.99.255501

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