Deterministic phase slips in mesoscopic superconducting rings
The properties of one-dimensional superconductors are strongly influenced by topological fluctuations of the order parameter, known as phase slips, which cause the decay of persistent current in superconducting rings and the appearance of resistance in superconducting wires. Despite extensive work,...
| Main Authors: | , , , |
|---|---|
| Format: | Online |
| Language: | English |
| Published: |
Nature Publishing Group
2016
|
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5123074/ |
| id |
pubmed-5123074 |
|---|---|
| recordtype |
oai_dc |
| spelling |
pubmed-51230742016-11-29 Deterministic phase slips in mesoscopic superconducting rings Petković, I. Lollo, A. Glazman, L. I. Harris, J. G. E. Article The properties of one-dimensional superconductors are strongly influenced by topological fluctuations of the order parameter, known as phase slips, which cause the decay of persistent current in superconducting rings and the appearance of resistance in superconducting wires. Despite extensive work, quantitative studies of phase slips have been limited by uncertainty regarding the order parameter's free-energy landscape. Here we show detailed agreement between measurements of the persistent current in isolated flux-biased rings and Ginzburg–Landau theory over a wide range of temperature, magnetic field and ring size; this agreement provides a quantitative picture of the free-energy landscape. We also demonstrate that phase slips occur deterministically as the barrier separating two competing order parameter configurations vanishes. These results will enable studies of quantum and thermal phase slips in a well-characterized system and will provide access to outstanding questions regarding the nature of one-dimensional superconductivity. Nature Publishing Group 2016-11-24 /pmc/articles/PMC5123074/ /pubmed/27882924 http://dx.doi.org/10.1038/ncomms13551 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Petković, I. Lollo, A. Glazman, L. I. Harris, J. G. E. |
| spellingShingle |
Petković, I. Lollo, A. Glazman, L. I. Harris, J. G. E. Deterministic phase slips in mesoscopic superconducting rings |
| author_facet |
Petković, I. Lollo, A. Glazman, L. I. Harris, J. G. E. |
| author_sort |
Petković, I. |
| title |
Deterministic phase slips in mesoscopic superconducting rings |
| title_short |
Deterministic phase slips in mesoscopic superconducting rings |
| title_full |
Deterministic phase slips in mesoscopic superconducting rings |
| title_fullStr |
Deterministic phase slips in mesoscopic superconducting rings |
| title_full_unstemmed |
Deterministic phase slips in mesoscopic superconducting rings |
| title_sort |
deterministic phase slips in mesoscopic superconducting rings |
| description |
The properties of one-dimensional superconductors are strongly influenced by topological fluctuations of the order parameter, known as phase slips, which cause the decay of persistent current in superconducting rings and the appearance of resistance in superconducting wires. Despite extensive work, quantitative studies of phase slips have been limited by uncertainty regarding the order parameter's free-energy landscape. Here we show detailed agreement between measurements of the persistent current in isolated flux-biased rings and Ginzburg–Landau theory over a wide range of temperature, magnetic field and ring size; this agreement provides a quantitative picture of the free-energy landscape. We also demonstrate that phase slips occur deterministically as the barrier separating two competing order parameter configurations vanishes. These results will enable studies of quantum and thermal phase slips in a well-characterized system and will provide access to outstanding questions regarding the nature of one-dimensional superconductivity. |
| publisher |
Nature Publishing Group |
| publishDate |
2016 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5123074/ |
| _version_ |
1613741210687504384 |