Title :
Transport Properties of YBCO Nanowires
Author :
Nawaz, Shahid ; Bauch, Thilo ; Lombardi, Floriana
Author_Institution :
Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Goteborg, Sweden
fDate :
6/1/2011 12:00:00 AM
Abstract :
We have carried out transport studies of YBa2Cu3O7-x (YBCO) nanowires. By exposing nanowires with microwaves, we see that short wires which have a flux-flow like current-voltage characteristic (IVC) clearly manifest current steps in the IVC (Shapiro steps). On the contrary, the longer wires exhibiting a resistively and capacitively shunted junction (RCSJ) model like current-voltage characteristic do not feature any Shapiro steps. The second case can be explained by taking into consideration the longer wire lengths where the wires loose coherency of flux flow due to inhomogeneity along the wire.
Keywords :
nanowires; superconducting materials; Shapiro steps; YBCO nanowires; YBa2Cu3O7-x; current-voltage characteristic; flux flow; resistively and capacitively shunted junction; transport property; Microwave measurements; Nanowires; Superconducting microwave devices; Temperature measurement; Wires; Yttrium barium copper oxide; Abrikosov vortices; flux flow; high-temperature superconductors; phase slips; shapiro steps; superconducting filaments and wires;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2102324