Unconventional gap structures and the intermediate mixed state: A vortex lattice study of the noncentrosymmetric superconductor BiPd
A. S. Cameron, L. Lemberger, R. Riyat, A. T. Holmes, Y. S. Yerin, A. D. Hillier, B. Joshi, S. Ramakrishnan, J. Gavilano, C. D. Dewhurst, E. M. Forgan, E. Blackburn
DOI 10.1103/PhysRevB.111.094514 · Physical Review B
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Abstract
We report on neutron scattering measurements on the vortex lattice of the noncentrosymmetric superconductor BiPd. We observe the existence of the intermediate mixed state, a region where Meissner and vortex lattice phases coexist, which is a feature of low κ type-II superconductors. Following this, we obtain an estimate of the value of κ using the extended London model. Finally, we find that the temperature dependence of the vortex lattice form factor fits well to a model designed to describe singlet-triplet mixing in noncentrosymmetric superconductors, which may shed light on the question of the gap structure in BiPd.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| BiPd Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.8 | Pressure not reported | unknown |
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