Comment: Superconducting transition in Nb nanowires fabricated using focused ion beam

Details Comment: Superconducting transition in Nb nanowires fabricated using focused ion beam Comment: Superconducting transition in Nb nanowires fabricated using focused ion beam

2010-03-25

arxiv.org/abs/1003.4840v1

Nanotechnology, Vol 21, No 16, 168001, 2010

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 1 figure accepted in Nanotechnology

Scientific paper

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.

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