Evidence of s-wave superconductivity in ternary intermetallic La3Pd4Si4

S. V. Taylor; J. F. Landaeta; D. Subero; P. Machado; E. Bauer; I. Bonalde

doi:10.1088/0953-2048/28/9/095013

Evidence of s-wave superconductivity in ternary intermetallic La3Pd4Si4

Superconductivity 2016-02-26 v1

Authors: S. V. Taylor , J. F. Landaeta , D. Subero , P. Machado , E. Bauer , I. Bonalde

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Abstract

We measured the temperature dependence of the magnetic penetration depth of La3Pd4Si4 down to 0.02 Tc. We observe a temperature-independent behaviour below 0.25 Tc, which is firm evidence for a nodeless superconducting gap in this material. The data display a very small anomaly around 1 K which we attribute to the possible presence of a superconducting impurity phase. The superfluid density is well described by a two-phase model, considering La3Pd4Si4 and the impurity phase. The present analysis suggests that the superconducting energy gap of La3Pd4Si4 is isotropic, as expected for conventional BCS superconductors.

Keywords

s-wave superconductivity La3Pd4Si4 ternary intermetallic magnetic penetration depth nodeless superconducting gap superfluid density BCS superconductor

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@article{arxiv.1602.08058,
  title  = {Evidence of s-wave superconductivity in ternary intermetallic La3Pd4Si4},
  author = {S. V. Taylor and J. F. Landaeta and D. Subero and P. Machado and E. Bauer and I. Bonalde},
  journal= {arXiv preprint arXiv:1602.08058},
  year   = {2016}
}

Evidence of s-wave superconductivity in ternary intermetallic La3Pd4Si4

Abstract

Keywords

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