Upper critical field of the noncentrosymmetric superconductor BiPd

Abstract

The superconducting parameters and upper critical field of the noncentrosymmetric superconductor BiPd have proven contentious. This material is of particular interest because it is a singular example of a $4f$-electron-free noncentrosymmetric superconductor of which crystals may be grown and cleaved, enabling surface-sensitive spectroscopies. Here, using bulk probes augmented by tunnelling data on defects, we establish that the lower of the previously reported upper critical fields corresponds to the bulk transition. The material behaves as a nearly-weak-coupled BCS s-wave superconductor, and we report its superconducting parameters as drawn from the bulk upper critical field. Possible reasons behind the order-of-magnitude discrepancy in the reported upper critical fields are discussed.

6 + epsilon pages, 4 figures

References in corpus (12)

• Heavy fermion superconductivity and magnetic order in non-centrosymmetric $CeP{t}_{3}Si$
• Electron Correlation and Pairing States in Superconductors without Inversion Symmetry
• Dirac Surface States and Nature of Superconductivity in Noncentrosymmetric BiPd
• Superconductivity at 5.4 K in $\beta$-Bi${}_2$Pd
• Observation of Andreev bound state and multiple energy gaps in the non-centrosymmetric superconductor BiPd
• Magnetic field dependence of the density of states in the multiband superconductor $\beta$-Bi${}_2$Pd
• Investigations of the superconducting states of noncentrosymmetric LaPdSi3 and LaPtSi3
• Physical properties of noncentrosymmetric superconductor LaIrSi3: A μSR study
• NMR and NQR Studies on Non-centrosymmetric Superconductors Re7B3, LaBiPt, and BiPd
• Anisotropic superconductivity in the noncentrosymmetric BiPd
• Topological competition of superconductivity in Pb/Ru/Sr_2RuO_4 junctions
• Weak ferromagnetism in non-centrosymmetric BiPd 4K superconductor

Cited by in corpus (10)

• Topological superconductors: a review
• Superconductivity and spin-orbit coupling in non-centrosymmetric materials: a review
• Nodeless superconductivity and preserved time-reversal symmetry in the noncentrosymmetric Mo3P superconductor
• Spin-triplet pairing state evidenced by half-quantum flux in a noncentrosymmetric superconductor
• Electron-phonon coupling and pairing mechanism in $\beta$--Bi${}_2$Pd centrosymmetric superconductor
• Type-I superconductivity in Al${}_6$Re
• Observation of Dirac surface states in the noncentrosymmetric superconductor BiPd
• Anisotropic superconductivity and unusually robust electronic critical field in single crystal La${}_7$Ir${}_3$
• Physical properties of noncentrosymmetric tungsten and molybdenum aluminides
• Temperature dependence of the lower critical field of the noncentrosymmetric superconductor $\alpha$-BiPd