Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
64 (1994), S. 637-639
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Mutual phase locking between two high-temperature step-edge superconducting-normal metal-superconducting junctions has been investigated using a two-junction circuit with a nonsuperconducting feedback path. The strength of the phase-locked state has been characterized as a function of locking frequency and temperature. Results are presented for a planar circuit as well as for a multilayer circuit incorporating a superconducting ground plane. The observed behavior was significantly enhanced for the circuit over a ground plane. Characterization of the phase locked state at 4 K yielded locking strengths as large as ||IL||/I¯c=9%, and maximum locking frequencies to 1.06 THz. The magnitude of the locking strength decreased rapidly with increasing temperature with complete loss of coherence occurring at temperatures greater than 35 K.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.111073
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