ASYMMETRIC DC-SQUIDS: MAGNETIC AND NOISE PROPERTIES

Autor:	M. Mango Furnari, Claudia Roberta Calidonna, Ettore Sarnelli, M. Russo, G. Testa, Sergio Pagano
Rok vydání:	2000
Předmět:	Josephson effect Physics Condensed matter physics media_common.quotation_subject Statistical and Nonlinear Physics Biasing Condensed Matter Physics Asymmetry Noise (electronics) Magnetic flux law.invention SQUID Inductance Nuclear magnetic resonance law Voltage media_common
Zdroj:	International Journal of Modern Physics B. 14:3062-3067
ISSN:	1793-6578 0217-9792
Popis:	SQUID configurations with an asymmetry in both the critical current and the normal resistance of the two Josephson junctions have been numerically analyzed. The analysis has been carried out on a high performance computer, by choosing parameters typical of low critical temperature SQUIDs. In particular the dependence of both the magnetic flux noise S Φ and the flux to voltage transfer function V Φ on the bias current and the normalized SQUID inductance β have been investigated. Thermal noise effects, including contributions of both junction and damping resistance have been introduced in the calculations. The results show that an increase of the asymmetry leads to higher V Φ and lower S Φ values. This suggests to use asymmetric dc-SQUIDs to improve the device performance for both small and large inductance values.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fd2b19ba1c09f88dce8d5fdbbe9d4504 https://doi.org/10.1142/s0217979200003319 Zobrazit plný text záznamu