2012/10/12 by C. Cirillo, M. Trezza, Fabio Chiarella +5
Chemistry · Engineering · Physics and Astronomy · #Chemistry #Composite material #Condensed matter physics #Grain boundary #Magnetic properties of thin films #Materials science #Microstructure #Nanotechnology #Nanowire #Optoelectronics #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Scanning electron microscope #Silicon #Superconducting Materials and Applications #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1063/1.4764066
accepted for publication on Applied Physics Letters
arxiv created 2012/10/12 · openalex publication_date 2012/10/22 · arxiv updated 2015/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Robust porous silicon substrates were employed for generating interconnected networks of superconducting ultrathin Nb nanowires. Scanning electron microscopy analysis was performed to investigate the morphology of the samples, which constitute of polycrystalline single wires with grain size of about 10 nm. The samples exhibit nonzero resistance over a broad temperature range below the critical temperature, fingerprint of phase slippage processes. The transport data are satisfactory reproduced by models describing both thermal and quantum fluctuations of the superconducting order parameter in thin homogeneous superconducting wires.