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arXiv · 1206.1182

Probing the superconducting state of the Heusler supercoductor: ZrNi$_2$Ga

A. D. Hillier·N. Parzyk·D. Mck Paul
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Abstract

Using both muon spin rotation and muon spin relaxation, the superconducting ground state of the Heusler superconductor {ZrNi$_2$Ga} has been studied. The temperature dependence of the magnetic penetration depth of {ZrNi$_2$Ga} is consistent with a single isotropic gap s-wave BCS superconductor. The gap energy is Δ(0)=0.44(1) meV and the magnetic penetration depth, λ(0), is 310(5) nm. Furthermore, we show evidence of a possible cross-over from an square flux line lattice to a hexagonal lattice at low temperatures. No evidence of time reversal symmetry breaking has been observed as might be expected for a half metal superconductor.

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A. D. Hillier, N. Parzyk, D. Mck Paul. 2012-06-06. Probing the superconducting state of the Heusler supercoductor: ZrNi$_2$Ga. https://arxiv.org/abs/1206.1182

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