Thermal fluctuations in bulk granular superconductors

✍ Scribed by M. T. Jahn

• Publisher: Springer US
• Year: 1978
• Tongue: English
• Weight: 219 KB
• Volume: 30
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00114967

✦ Synopsis

The resistive transitions and the temperature dependence of the currentvoltage (I-V) characteristics of Nb-powder bulk granular superconductors near the transition temperature are investigated. Experimental results on the resistive transition are explained in terms of Anderson's theory as thermally activated phase slippage, and the I-V characteristics are compared with the effects of thermal fluctuations on an array of Josephson weak links in a simplified model based on Ambegaokar and Halperin's theory of thermal noise in the Josephson effect.