Comment: Superconducting transition in Nb nanowires fabricated using focused ion beam
arXiv:1003.4840 · doi:10.1088/0957-4484/21/16/168001
Abstract
In a recent paper Tettamanzi et al (2009 Nanotechnology \bf{20} 465302) describe the fabrication of superconducting Nb nanowires using a focused ion beam. They interpret their conductivity data in the framework of thermal and quantum phase slips below $T_c$. In the following we will argue that their analysis is inappropriate and incomplete, leading to contradictory results. Instead, we propose an interpretation of the data within a SN proximity model.
3 pages, 1 figure accepted in Nanotechnology