Odd-frequency pairing effect on the superfluid density and the Pauli spin susceptibility in spatially nonuniform spin-singlet superconductors
arXiv:1403.5051 · doi:10.1103/PhysRevB.89.184505
Abstract
A theoretical study is presented on the odd-frequency spin-singlet pairing that arises in nonuniform even-frequency superconductors as a consequence of broken translation symmetry. The effect of the odd-frequency pairing on the superfluid density and the spin susceptibility is analyzed by using the quasiclassical theory of superconductivity. It is shown that (1) the superfluid density is reduced by the formation of the odd-frequency singlet pairs and (2) the odd-frequency pairing increases the spin susceptibility even though its spin symmetry is singlet. The two unusual phenomena are related to each other through a generalized Yosida formula by taking into account both the even- and odd-frequency pairing effects.
10 pages, 4 figures
References in corpus (4)
- Theory of the proximity effect in junctions with unconventional superconductors
- Symmetries of Pairing Correlations in Superconductor-Ferromagnet Nanostructures
- Odd-frequency pairing in normal metal/superconductor junctions
- Pairing symmetry conversion by spin-active interfaces in superconducting junctions