Patterned Bilayer Films as a New Class of Superconducting Wire Network for Quantum Logic Applications
Abstract
We present results of AC and DC magnetic moment measurements on a Pb(50 nm)/Cu(10 nm) bilayer film with a triangular antidot lattice of spacing 866 nm and diameter 350 nm. The sharp peaking of matching anomalies in the magnetization curves indicates a proximity coupling of the Pb and Cu layers, which is also implicated by an asymmetric splitting of matching peaks in AC moment data. Empirical fits to the magnetization curves reveal trends in superconducting parameters. The moment data can be scaled below Tc = 6.7 K using two characteristic temperatures, Tc and T* < Tc. This work shows superconducting wire network behavior can be realized and controlled in a simply patterned bilayer film without the complex fabrication of a Josephson junction array, or nanoscale wire features.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- March 2004
- Bibcode:
- 2004APS..MARD37008D