p-wave and d-wave superconductivity in quasi-two-dimensional metals

We compare predictions of the mean-field theory of superconductivity for ne arly antiferromagnetic and nearly ferromagnetic metals in two dimensions. T he calculations are based on a parametrization of the effective interaction arising from the exchange of magnetic fluctuations. The Eliashberg equatio ns for the transition temperature an solved including the full momentum dep endence of the electron self-energy, The results shaw that for comparable p arameters d-wave singlet pairing in nearly antiferromagnetic metals is gene rally much stronger than p-wave triplet pairing in nearly ferromagnetic met als in quasi-two dimensions, The relevance to the layered materials, and in particular Sr2RuO4 that exhibits p-wave triplet pairing, is discussed.