Observation of the non-linear Meissner effect

J. A. Wilcox, M. J. Grant, L. Malone, C. Putzke, D. Kaczorowski, T. Wolf, F. Hardy, C. Meingast, J. G. Analytis, J.-H. Chu, I. R. Fisher and A. Carrington ()
Additional contact information
J. A. Wilcox: University of Bristol
M. J. Grant: University of Bristol
L. Malone: University of Bristol
C. Putzke: University of Bristol
D. Kaczorowski: Polish Academy of Sciences
T. Wolf: Karlsruhe Institute of Technology
F. Hardy: Karlsruhe Institute of Technology
C. Meingast: Karlsruhe Institute of Technology
J. G. Analytis: Stanford University
J.-H. Chu: Stanford University
I. R. Fisher: Stanford University
A. Carrington: University of Bristol

Nature Communications, 2022, vol. 13, issue 1, 1-6

Abstract: Abstract A long-standing theoretical prediction is that in clean, nodal unconventional superconductors the magnetic penetration depth λ, at zero temperature, varies linearly with magnetic field. This non-linear Meissner effect is an equally important manifestation of the nodal state as the well studied linear-in-T dependence of λ, but has never been convincingly experimentally observed. Here we present measurements of the nodal superconductors CeCoIn5 and LaFePO which clearly show this non-linear Meissner effect. We further show how the effect of a small dc magnetic field on λ(T) can be used to distinguish gap nodes from non-nodal deep gap minima. Our measurements of KFe2As2 suggest that this material has such a non-nodal state.

Date: 2022
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-022-28790-y Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28790-y

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-022-28790-y

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().