University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Persistent currents in normal metal rings: comparing high-precision experiment with theory

Bleszynski-Jayich, AC, Shanks, WE, Peaudecerf, B, Ginossar, E, Oppen, FV, Glazman, L and Harris, JGE (2009) Persistent currents in normal metal rings: comparing high-precision experiment with theory Science, 326 (5950). pp. 272-275.

[img]
Preview
Text
0906.4780v1.pdf
Available under License : See the attached licence file.

Download (2MB) | Preview
[img]
Preview
Text (licence)
SRI_deposit_agreement.pdf
Available under License : See the attached licence file.

Download (33kB) | Preview

Abstract

Quantum mechanics predicts that the equilibrium state of a resistive electrical circuit contains a dissipationless current. This persistent current has been the focus of considerable theoretical and experimental work, but its basic properties remain a topic of controversy. The main experimental challenges in studying persistent currents have been the small signals they produce and their exceptional sensitivity to their environment. To address these issues we have developed a new technique for detecting persistent currents which offers greatly improved sensitivity and reduced measurement back action. This allows us to measure the persistent current in metal rings over a wider range of temperature, ring size, and magnetic field than has been possible previously. We find that measurements of both a single ring and arrays of rings agree well with calculations based on a model of non-interacting electrons.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
Bleszynski-Jayich, ACUNSPECIFIEDUNSPECIFIED
Shanks, WEUNSPECIFIEDUNSPECIFIED
Peaudecerf, BUNSPECIFIEDUNSPECIFIED
Ginossar, EUNSPECIFIEDUNSPECIFIED
Oppen, FVUNSPECIFIEDUNSPECIFIED
Glazman, LUNSPECIFIEDUNSPECIFIED
Harris, JGEUNSPECIFIEDUNSPECIFIED
Date : 25 June 2009
Identification Number : 10.1126/science.1178139
Uncontrolled Keywords : cond-mat.mes-hall, cond-mat.mes-hall, cond-mat.dis-nn
Related URLs :
Additional Information : This is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science, on 25 June 2009, Vol 326 (5950), DOI: 10.1126/science.1178139
Depositing User : Symplectic Elements
Date Deposited : 21 Aug 2015 08:02
Last Modified : 21 Aug 2015 08:02
URI: http://epubs.surrey.ac.uk/id/eprint/808207

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800