摘要: The computer model used by Tesche and Clarke to calculate the voltage noise across dc SQUID is extended circulating current around loop, correlation between SQUID. parameters chosen are % MathType!MTEF!2!1!+-% feaafeart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4baFfea0dXde9vqpa0lb9% cq0dXdb9IqFHe9FjuP0-iq0dXdbba9pe0lb9hs0dXda91qaq-xfr-x% fj-hmeGabaqaciGacaGaaeqabaWaaeaaeaaakeaacqaHYoGycqGH9a% qpcaaIYaacbaGaa8htaiaa-LeadaWgaaWcbaacbiGaa4hmaaqabaGc% caGGVaacciGae0NPdy0aaSbaaSqaaiab9bcaGiab9bdaWaqabaGccq% GH9aqpcaaIXaGaaiilaiaabccacqqFtoWrcqqF9aqpcqqFYaGmcqaH% apaCcaWGRbWaaSbaaSqaaiaadkeaaeqaaOGaa8hvaiaa-9cacaWFjb% WaaSbaaSqaaiaa+bcacaGFWaaabeaakiab9z6agnaaBaaaleaacqqF% GaaicqqFWaamaeqaaOGaeyypa0JaaeiiaiaabcdacaqGUaGaaeimai% aabwdaaaa!51F9!\[\beta = 2LI_0 /\Phi _{ 0} 1,{\rm{ }}\Gamma 2\pi k_B T/I_{ \Phi {\rm{ 0}}{\rm{.05}}\], an applied flux of Φ0/4 (L inductance, I 0 critical per junction, T temperature, Φ0 quantum). At frequencies well below Josephson frequency at optimum bias, power spectral density approximately 16 kBTR, 11kB T/R voltage-current 12k B T, where R resistance junction.
springer.com
harvard.edu
osti.gov
sci-hub.se 参考文章(8)
R. C. Jaklevic, J. Lambe, J. E. Mercereau, A. H. Silver, Macroscopic quantum interference in superconductors Physical Review. ,vol. 140, pp. 1628- 1637 ,(1965) , 10.1103/PHYSREV.140.A1628
John Clarke, Wolfgang M. Goubau, Mark B. Ketchen, TUNNEL JUNCTION DC SQUID: FABRICATION, OPERATION, and PERFORMANCE Journal of Low Temperature Physics. ,vol. 25, pp. 99- 144 ,(1976) , 10.1007/BF00654826
R. C. Jaklevic, John Lambe, A. H. Silver, J. E. Mercereau, Quantum Interference Effects in Josephson Tunneling Physical Review Letters. ,vol. 12, pp. 159- 160 ,(1964) , 10.1103/PHYSREVLETT.12.159
D. E. McCumber, Effect of ac Impedance on dc Voltage‐Current Characteristics of Superconductor Weak‐Link Junctions Journal of Applied Physics. ,vol. 39, pp. 3113- 3118 ,(1968) , 10.1063/1.1656743
J. E. Zimmerman, J. E. Mercereau, Compton Wavelength of Superconducting Electrons Physical Review Letters. ,vol. 14, pp. 887- 888 ,(1965) , 10.1103/PHYSREVLETT.14.887
W. C. Stewart, CURRENT‐VOLTAGE CHARACTERISTICS OF JOSEPHSON JUNCTIONS Applied Physics Letters. ,vol. 12, pp. 277- 280 ,(1968) , 10.1063/1.1651991
John Clarke, Claudia D. Tesche, R. P. Giffard, Optimization of dc SQUID voltmeter and magnetometer circuits Journal of Low Temperature Physics. ,vol. 37, pp. 405- 420 ,(1979) , 10.1007/BF00119198
Claudia D. Tesche, John Clarke, dc SQUID: Noise and optimization Journal of Low Temperature Physics. ,vol. 29, pp. 301- 331 ,(1977) , 10.1007/BF00655097