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          Institute: MPI für Chemische Physik fester Stoffe     Collection: publications 2013     Display Documents



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ID: 667523.0, MPI für Chemische Physik fester Stoffe / publications 2013
Evidence for two-gap superconductivity in the non-centrosymmetric compound LaNiC2
Authors:Chen, J.; Jiao, L.; Zhang, J. L.; Chen, Y.; Yang, L.; Nicklas, M.; Steglich, F.; Yuan, H. Q.
Language:English
Date of Publication (YYYY-MM-DD):2013-05-07
Title of Journal:New Journal of Physics
Volume:15
Start Page:053005-1
End Page:053005-16
Sequence Number of Article:053005
Review Status:not specified
Audience:Not Specified
Abstract / Description:We study the superconducting properties of the non-centrosymmetric compound LaNiC2 by measuring the London penetration depth Delta lambda(T), the specific heat C(T, B) and the electrical resistivity rho(T, B). Both Delta lambda(T) and the electronic specific heat C-e(T) exhibit behavior at low temperatures that can be described in terms of a phenomenological two-gap Bardeen-Cooper-Schrieffer (BCS) model. The residual Sommerfeld coefficient in the superconducting state, gamma(0)(B), shows a rapid increase at low fields and then an eventual saturation with increasing magnetic field. A pronounced upturn curvature is observed in the upper critical field B-c2(T) near T-c. All these experimental observations support the existence of two-gap superconductivity in LaNiC2.
External Publication Status:published
Document Type:Article
Communicated by:Ina Werner
Affiliations:MPI für chemische Physik fester Stoffe
Identifiers:ISI:000318472500004 [ID No:1]
ISSN:1367-2630 [ID No:2]
DOI:10.1088/1367-2630/15/5/053005
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