Disorder Induced Fluctuations of the Pairing Parameter in P–wave Superconductors *

In case of an anisotropic superconductor non-magnetic disorder leads eventually to pair breaking effect via Abrikosov–Gorkov formula [1, 2, 3, 4, 5], like for magnetic impurities, for any value of a coherence length ξ. By analogy to an isotropic s–wave pairing, for superconductors with an enough large coherence length ξ, the amplitude of paring potential |∆(ij)| tends be the same for all bonds but disorder induces the effect of fluctuations in the amplitude leading, in this way, to destruction of pairing. Here we will calculate fluctuating potentials standard deviations < δ|∆ij | 2 > and < εi > Their ratio Γ =< δ|∆ij | 2 > / < εi > will be a criterion of pairing potential fluctuations [6].