title: Nodal quasiparticles in stripe ordered superconductors.
abstract: We study the properties of a quasi-one-dimensional superconductor which consists of an alternating array of two inequivalent chains. This model is a simple caricature of a striped high temperature superconductor, and is more generally a theoretically controllable system in which the superconducting state emerges from a non-Fermi-liquid normal state. Even in this limit, " d-wave-like" order parameter symmetry is natural, but the superconducting state can either have a complete gap in the quasiparticle spectrum, or gapless "nodal" quasiparticles. We also find circumstances in which antiferromagnetic order (typically incommensurate) coexists with superconductivity.
authors.affiliation: Department of Physics, UCLA, Los Angeles, California 90095, USA.
authors.forename: M
authors.initials: M
authors.lastname: Granath
authors.forename: V
authors.initials: V
authors.lastname: Oganesyan
authors.forename: S A
authors.initials: SA
authors.lastname: Kivelson
authors.forename: E
authors.initials: E
authors.lastname: Fradkin
authors.forename: V J
authors.initials: VJ
authors.lastname: Emery