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Unconventional gap structures and the intermediate mixed state: A vortex lattice study of the noncentrosymmetric superconductor BiPd

Cameron, A. S. ; Lemberger, L. ; Riyat, R. ; Holmes, A. T. ; Yerin, Y. S. ; Hillier, A. D. ; Joshi, B. ; Ramakrishnan, S. ; Gavilano, J. and Dewhurst, C. D. , et al. (2025) In Physical Review B 111(9).
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 type-II superconductors. Following this, we obtain an estimate of the value of 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.
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
superconductivity, vortex lattice, neutron scattering
in
Physical Review B
volume
111
issue
9
article number
094514
pages
9 pages
publisher
American Physical Society
external identifiers
  • scopus:105001204019
ISSN
2469-9950
DOI
10.1103/PhysRevB.111.094514
language
English
LU publication?
yes
id
93b82865-ea39-4007-a0c2-935b43902408
date added to LUP
2025-03-13 15:49:36
date last changed
2025-05-24 04:03:15
@article{93b82865-ea39-4007-a0c2-935b43902408,
  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  type-II superconductors. Following this, we obtain an estimate of the value of  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.}},
  author       = {{Cameron, A. S. and Lemberger, L. and Riyat, R. and Holmes, A. T. and Yerin, Y. S. and Hillier, A. D. and Joshi, B. and Ramakrishnan, S. and Gavilano, J. and Dewhurst, C. D. and Forgan, Edward M. and Blackburn, E.}},
  issn         = {{2469-9950}},
  keywords     = {{superconductivity; vortex lattice; neutron scattering}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{9}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review B}},
  title        = {{Unconventional gap structures and the intermediate mixed state: A vortex lattice study of the noncentrosymmetric superconductor BiPd}},
  url          = {{http://dx.doi.org/10.1103/PhysRevB.111.094514}},
  doi          = {{10.1103/PhysRevB.111.094514}},
  volume       = {{111}},
  year         = {{2025}},
}