Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

An Observable Prerequisite for the Existence of Persistent Currents

Version 1 : Received: 4 November 2018 / Approved: 5 November 2018 / Online: 5 November 2018 (14:53:59 CET)

A peer-reviewed article of this Preprint also exists.

Journal reference: European Physical Journal B 2019, 92, 67
DOI: 10.1140/epjb/e2019-100033-8


A classical model is presented for persistent currents in superconductors. Their existence is argued to be warranted because their decay would violate the second law of thermodynamics. This conclusion is achieved by analyzing comparatively Ohm's law and the Joule effect in normal metals and superconducting materials. Whereas Ohm's law applies in identical terms in both cases, the Joule effect is shown to cause the temperature of a superconducting sample to \textit{decrease}. An experiment is proposed to check the validity of this work in superconductors of both types I and II.


superconductivity; persistent currents; Joule effect; second law of thermodynamics


PHYSICAL SCIENCES, Condensed Matter Physics

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