title: Spin density wave fluctuations and p-wave pairing in Sr2RuO4.
abstract: Recently, a debate has arisen over which of the two distinct parts of the Fermi surface of Sr(2)RuO(4) is the active part for the chiral p-wave superconductivity exhibited. Early theories proposed p-wave pairing on the two-dimensional γ band, whereas a recent proposal focuses on the one-dimensional (α, β) bands whose nesting pockets are the source of the strong incommensurate spin density wave (SDW) fluctuations. We apply a renormalization group theory to study quasi-one-dimensional repulsive Hubbard chains and explain the form of SDW fluctuations, reconciling the absence of long-range order with their nesting Fermi surface. The mutual exclusion of p-wave pairing and SDW fluctuations in repulsive Hubbard chains favors the assignment of the two-dimensional γ band as the source of p-wave pairing.
authors.affiliation: Department of Physics and Centre of Theoretical and Computational Physics, The University of Hong Kong, Hong Kong SAR, China.
authors.forename: Jia-Wei
authors.initials: JW
authors.lastname: Huo
authors.forename: T M
authors.initials: TM
authors.lastname: Rice
authors.forename: Fu-Chun
authors.initials: FC
authors.lastname: Zhang