Effect of disorder on the vortex dynamics in superconducting Josephson junction arrays and clusters

We have studied the effect of intrinsic disorder on the transport properties of large Josephson junction arrays and clusters. In large arrays, intrinsic random disorder results in the washing out of features in the magnetoresistance. It also gives rise to multiple onsets in the resistive transition as a function of temperature. Large arrays are difficult to model because of the large number of junctions involved, thus we have studied the effect of local (single junction) disorder in smaller arrays referred to as clusters. The transport measurements on clusters indicate that features due to disorder in the junction critical currents, dominate the properties. We have developed a simple model in real space to understand the static vortex configurations and the motion of the vortices.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Rao, Subashri Vijendran

Contributors dc:contributor

• Van Harlingen, Dale J.

• Physics, Condensed Matter

Statement dc:rights

• Copyright 1994 Rao, Subashri Vijendran

Language dc:language

eng

Identifier

AAI9512520
(UMI)AAI9512520

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/23193