Characterization of large two-dimensional YBa2Cu3O7–δSQUID arrays. (30th June 2016)

• Record Type: Journal Article
• Authors: Taylor, B J; Berggren, S A E; O'Brien, M C; deAndrade, M C; Higa, B A; Escobar, A M Leese de
• Is Part Of: Superconductor science & technology. Volume 29:Number 8(2016:Aug.)
• Publication Date: 2016-06-30
• Subjects: SQUID array -- step-edge Josephson junction -- dynamic resistance; Superconductivity -- Periodicals; Superconductors -- Periodicals; 537.623
• DOI: 10.1088/0953-2048/29/8/084003
• Languages: English
• ISSNs: 0953-2048

Abstract

Abstract: Large two-dimensional SQUID arrays were made using the step-edge Josephson junction process. The performance of the arrays is analyzed with respect to determining the conditions under which the optimal performance is achieved. We find that optimization of the field-voltage transfer function V B is reached at a specific temperature and device current bias point, and arrive at an empirical expression describing the dependence of V B on the critical current and dynamic resistance of the SQUID array and as a function of temperature. The empirical expression for V B of the SQUID arrays is similar to that given by well known theoretical models for a single SQUID.