Quantum effects and RF - SQUID sensitivity

Journal Article · Sun May 01 04:00:00 EDT 1983 · IEEE Trans. Magn.; (United States)

DOI:https://doi.org/10.1109/TMAG.1983.1062492· OSTI ID:5680705

Dmitrenko, I; Khlus, V; Shnyrkov, V; Tsoi, G

Fine structure of V /SUB RF/ vs I /SUB RF/ dependence of the rf SQUID in the hysteretic mode is investigated experimentally at temperatures from 0.5 to 4.2 K. A suggestion is made that for high resistance point contacts of small capacitance the SQUID sensitivity may be limited by quantum processes for temperatures high enough (Tapprox. =4 K). To explain the experimental results macroscopic quantum tunneling and zero-point fluctuations are considered as relevant mechanisms.

• Research Organization: Physico-Technical Institute of Low Temperatures, Kharkov 164, Lenin's prospect, 47
• OSTI ID: 5680705
• Journal Information: IEEE Trans. Magn.; (United States), Journal Name: IEEE Trans. Magn.; (United States) Vol. 19:3; ISSN IEMGA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUXMETERS
HYSTERESIS
MEASURING INSTRUMENTS
MECHANICS
MICROWAVE EQUIPMENT
QUANTUM MECHANICS
RF SYSTEMS
SENSITIVITY
SQUID DEVICES
SUPERCONDUCTING DEVICES
TEMPERATURE DEPENDENCE
TUNNEL EFFECT