Superconductivity due to spin fluctuations originating from multiple Fermi surfaces in a double chain superconductor Pr$_2$Ba$_4$Cu$_7$O$_{15-δ}$}

Tsuguhito Nakano; Kazuhiko Kuroki; Seiichiro Onari

doi:10.1103/PhysRevB.76.014515

paper

Superconductivity due to spin fluctuations originating from multiple Fermi surfaces in a double chain superconductor Pr $_{2}$ Ba $_{4}$ Cu $_{7}$ O $_{15 - δ}$ }

arXiv:cond-mat/0701160 · doi:10.1103/PhysRevB.76.014515

Abstract

The mechanism of superconductivity in Pr $_{2}$ Ba $_{4}$ Cu $_{7}$ O $_{15 - δ}$ is studied using a quasi-one dimensional double chain model with appopriate hopping integrals, on-site $U$ , and off-site repulsion $V_{1}$ . Applying the fluctuation exchange method to this model and solving the Eliashberg equation, we obtain the doping dependence of superconductivity that is consistent with the experiments. The superconducting gap has an extended s-wave-like form, which gives a temperature dependence of the spin lattice relaxation rate that does not contradict with the experimental results.

5 pages, 8 figures, REVTeX

References in corpus (1)

Filling-dependence of the zigzag Hubbard ladder for a quasi-one-dimensional superconductor Pr_2Ba_4Cu_7O_{15-delta}

Superconductivity due to spin fluctuations originating from multiple Fermi surfaces in a double chain superconductor Pr2​Ba4​Cu7​O15−δ​}

Abstract

References in corpus (1)

Cited by in corpus (2)

Superconductivity due to spin fluctuations originating from multiple Fermi surfaces in a double chain superconductor Pr $_{2}$ Ba $_{4}$ Cu $_{7}$ O $_{15 - δ}$ }