A Mechanism to Stabilize the Non-Unitary State for the Heavy Fermion Superconductor UPt3

摘要: We consider a mechanism to stabilize the non-unitary state proposed for pairing of heavy Fermion superconductor UPt 3 . If derivative density states with respect energy is finite at Fermi surface, superconducting has magnetic moment. The we concerned this property and similar Stoner's theory ferromagnetism. find, by constructing GL free energy, that following two conditions are crucial: i) electron-hole asymmetry rather large; ii) system in nearly ferromagnetic state.