6533b826fe1ef96bd1285382
RESEARCH PRODUCT
Quantum phase slips in superconducting Nb nanowire networks deposited on self-assembled Si templates
F. ChiarellaVitaly BondarenkoSerghej L. PrischepaM. TrezzaCarla CirilloCarmine AttanasioAntonio Vecchionesubject
SuperconductivityMaterials sciencePhysics and Astronomy (miscellaneous)Condensed matter physicsScanning electron microscopeCondensed Matter - SuperconductivityNanowireFOS: Physical sciences02 engineering and technologyAtmospheric temperature range021001 nanoscience & nanotechnologyPorous silicon01 natural sciencesGrain size3. Good healthSuperconductivity (cond-mat.supr-con)Phase (matter)Condensed Matter::Superconductivity0103 physical sciencesCrystallite010306 general physics0210 nano-technologydescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-10-12 |