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Transport Properties of YBCO Nanowires

Shahid Nawaz (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Thilo Bauch (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Floriana Lombardi (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
IEEE Transactions on Applied Superconductivity (1051-8223). Vol. 21 (2011), 3, p. 164-167.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Abrikosov vortices, flux flow, high-temperature superconductors, phase, slips, shapiro steps, superconducting filaments and wires, ybacuo nanobridges, devices

Denna post skapades 2011-06-30.
CPL Pubid: 142774


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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik


Elektroteknik och elektronik

Chalmers infrastruktur