supercurrent

{{Short description|Current flowing in a superconductor without dissipation}}

A supercurrent is a superconducting current, that is, electric current which flows without dissipation in a superconductor.{{cite web|last=Jones|first=Andrew Zimmerman|title=supercurrent - definition of a supercurrent|url=http://physics.about.com/od/physicsqtot/g/supercurrent.htm|website=About.com Physics|accessdate=5 June 2013|archive-date=6 September 2015|archive-url=https://web.archive.org/web/20150906072232/http://physics.about.com/od/physicsqtot/g/supercurrent.htm|url-status=dead}}{{cite book|url=http://people.ccmr.cornell.edu/~clh/BT-GL/6.4.pdf|author=Christopher L. Henley|title=States in Solids|chapter=Lecture 6.4 - Supercurrent and critical currents|archive-url=https://web.archive.org/web/20111222125818/http://people.ccmr.cornell.edu/~clh/BT-GL/6.4.pdf|url-status=dead|archive-date=22 December 2011|publisher=(unpublished)}}{{cite journal|last1=Hirsch|first1=J. E.|title=Electrodynamics of superconductors|journal=Physical Review B|year=2004|volume=69|issue=21|pages=214515|doi=10.1103/PhysRevB.69.214515|arxiv=cond-mat/0312619|bibcode=2004PhRvB..69u4515H|s2cid=119086582 }} Under certain conditions, an electric current can also flow without dissipation in microscopically small non-superconducting metals. However, currents in such perfect conductors are not called supercurrents, but persistent currents.

{{Superconductivity}}