Document Detail

Strong Pressure Dependence of the Magnetic Penetration Depth in Single Crystals of the Heavy-Fermion Superconductor CeCoIn_{5} Studied by Muon Spin Rotation.
MedLine Citation:
PMID:  23383830     Owner:  NLM     Status:  In-Data-Review    
In the tetragonal heavy fermion system CeCoIn_{5} the unconventional superconducting state is probed by means of muon spin rotation. The pressure dependence (0-1 GPa) of the basal-plane magnetic penetration depth (λ_{a}), the penetration depth anisotropy (γ=λ_{c}/λ_{a}) and the temperature dependence of 1/λ_{i}^{2} (i=a, c) were studied in single crystals. A strong decrease of λ_{a} with pressure was observed, while γ and λ_{i}^{2}(0)/λ_{i}^{2}(T) are pressure independent. A linear relationship between 1/λ_{a}^{2}(270  mK) and T_{c} was also found. The large decrease of λ_{a} with pressure is the signature of an increase of the number of superconducting quasiparticles by a factor of about 2.
L Howald; A Maisuradze; P Dalmas de Réotier; A Yaouanc; C Baines; G Lapertot; K Mony; J-P Brison; H Keller
Publication Detail:
Type:  Journal Article     Date:  2013-01-02
Journal Detail:
Title:  Physical review letters     Volume:  110     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-02-06     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  017005     Citation Subset:  IM    
Physik-Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
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