Title :
Quantum effects and RF-SQUID sensitivity
Author :
Dmitrenko, I.N. ; Khlus, V.A. ; Tsoi, G.M. ; Shnyrkov, V.I.
Author_Institution :
Institute of Low temperatures, Kharkov, Lenin´´s Prospect, USSR
fDate :
5/1/1983 12:00:00 AM
Abstract :
Fine structure of V
RFvs I
RFdependence 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 (

K). To explain the experimental results macroscopic quantum tunneling and zero-point fluctuations are considered as relevant mechanisms.
Keywords :
Josephson devices; Damping; Fluctuations; Magnetic flux; Metastasis; Oscillators; Probability distribution; Quantization; Quantum mechanics; SQUIDs; Tunneling;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1983.1062492