Document Type

Course

Journal/Book Title/Conference

Physics 3710 – Introductory Modern Physics

Publication Date

8-28-2017

First Page

1

Last Page

4

Abstract

Superconductivity phenomenology

Superconductors are materials that exhibit zero (or close to zero) resistance to electrical currents as well as perfect diamagnetism (the Meissner Effect). When a current is started in a superconducting loop, it persists for a very long time without an applied potential difference. The resistivity of a superconductor is measured to be less than 4x10–25 Ω-m (for comparison, the resistivity of an ordinary good conductor is about 10–8 Ω-m), and the associated decay time for the current is estimated to be greater than 100,000 years (as opposed to about 1 µs for an ordinary good conductor).

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