title: Pair-density-wave correlations in the Kondo-Heisenberg model.
abstract: We show, using density-matrix renormalization-group calculations complemented by field-theoretic arguments, that the spin-gapped phase of the one dimensional Kondo-Heisenberg model exhibits quasi-long-range superconducting correlations only at a nonzero momentum. The local correlations in this phase resemble those of the pair-density-wave state which was recently proposed to describe the phenomenology of the striped ordered high-temperature superconductor La(2-x)Ba(x)CuO₄, in which the spin, charge, and superconducting orders are strongly intertwined.
authors.affiliation: Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: Erez
authors.initials: E
authors.lastname: Berg
authors.forename: Eduardo
authors.initials: E
authors.lastname: Fradkin
authors.forename: Steven A
authors.initials: SA
authors.lastname: Kivelson