Nonunitary Triplet Pairing in the Centrosymmetric SuperconductorLaNiGa2

Two-Gap Superconductivity in LaNiGa_{2} with Nonunitary Triplet Pairing and Even Parity Gap Symmetry.

The nature of the pairing states of superconducting LaNiC_{2} and LaNiGa_{2} has to date remained a puzzling question. Broken time reversal symmetry has been observed in both compounds and a group theoretical analysis implies a nonunitary triplet pairing state. However, all the allowed nonunitary triplet states have nodal gap functions but most thermodynamic and NMR measurements indicate fully ...

Superfluid Phases of Triplet Pairing

S-wave pairing symmetry in non-centrosymmetric superconductor Re3W

The alloys of non-centrosymmetric superconductor, Re3W, which were reported to have an α-Mn structure [P. Greenfield and P. A. Beck, J. Metals, N. Y. 8, 265 (1959)] with Tc = 9 K were prepared by arc melting. The ac susceptibility and low-temperature specific heat were measured on these alloys. It is found that there are two superconducting phases coexisting in the samples with Tc1 ∼ 9 K and Tc...

0 Triplet Pairing in Neutron Matter

The separation method developed earlier by us [Nucl. Phys. A598 390 (1996)] to calculate and analyze solutions of the BCS gap equation for S0 pairing is extended and applied to P2– F2 pairing in pure neutron matter. The pairing matrix elements are written as a separable part plus a remainder that vanishes when either momentum variable is on the Fermi surface. This decomposition effects a separa...

Josephson effect test for triplet pairing symmetry

The critical current modulation and the spontaneous flux of the vortex states in corner Josephson junctions between Sr2RuO4 and a conventional s-wave superconductor are calculated as a function of the crystal orientation, and the magnetic field. For Sr2RuO4 we assume two nodeless p-wave pairing states. Also we use the nodal f -wave states B1g × Eu and B2g × Eu, and one special p-wave state havi...