Current distributions of thermal switching in extremely underdamped Josephson junctions

Journal Article · Mon Feb 01 04:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.1525· OSTI ID:5579520

Silvestrini, P; Liengme, O; Gray, K E

The first measurements of the switching current distribution of an extremely underdamped Josephson junction are presented at various temperatures. Careful fitting of the data provides an experimental verification of the thermal activation theory in the very low damping limit. Moreover, the fitting allows us to obtain the ''effective'' resistance of a Josephson tunnel junction, thus providing an important indication as to the proper junction resistance to be used in the resistively shunted junction model. These values of junction resistance show the temperature dependence of a subgap resistance, i.e., exp(..delta../k/sub B/T), due to activation of quasiparticles over the superconductor energy gap ..delta...

• Research Organization: Instituto di Cibernetica del Consiglio Nazionale delle Ricerche, Via Toiano 6, 80072 Arco Felice, Napoli, Italy
• OSTI ID: 5579520
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:4; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTIVATION ENERGY
CURRENTS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ENERGY
ENERGY GAP
EQUIPMENT
JOSEPHSON JUNCTIONS
JUNCTIONS
QUASI PARTICLES
SUPERCONDUCTING JUNCTIONS
SWITCHES
TEMPERATURE DEPENDENCE