Fluctuation exchange study on the double chain superconductor Pr2 Ba4 Cu7 O15 - δ

T. Nakano; K. Kuroki; S. Onari

doi:10.1016/j.physb.2007.10.354

Fluctuation exchange study on the double chain superconductor Pr₂ Ba₄ Cu₇ O_{15 - δ}

T. Nakano, K. Kuroki, S. Onari

Graduate School of Natural Science and Technology

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Superconductivity of a double chain superconductor Pr₂ Ba₄ Cu₇ O_{15 - δ} is investigated on the double chain Hubbard model with realistic values of the hopping parameters, on-site interaction U, and off-site interaction V. By applying the fluctuation exchange (FLEX) method to the model and solving the linearized Eliashberg's equation, singlet pairing superconducting phase, which has the doping dependence of T_c consistent with the experimental results, is obtained. The finite temperature quantum Monte Carlo (FTQMC) calculation also supports the FLEX results at least qualitatively.

Original language	English
Pages (from-to)	1159-1161
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	403
Issue number	5-9
DOIs	https://doi.org/10.1016/j.physb.2007.10.354
Publication status	Published - Apr 1 2008

Keywords

Cuprate
Double chain
Superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2007.10.354

Cite this

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title = "Fluctuation exchange study on the double chain superconductor Pr2 Ba4 Cu7 O15 - δ",

abstract = "Superconductivity of a double chain superconductor Pr2 Ba4 Cu7 O15 - δ is investigated on the double chain Hubbard model with realistic values of the hopping parameters, on-site interaction U, and off-site interaction V. By applying the fluctuation exchange (FLEX) method to the model and solving the linearized Eliashberg's equation, singlet pairing superconducting phase, which has the doping dependence of Tc consistent with the experimental results, is obtained. The finite temperature quantum Monte Carlo (FTQMC) calculation also supports the FLEX results at least qualitatively.",

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AU - Onari, S.

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N2 - Superconductivity of a double chain superconductor Pr2 Ba4 Cu7 O15 - δ is investigated on the double chain Hubbard model with realistic values of the hopping parameters, on-site interaction U, and off-site interaction V. By applying the fluctuation exchange (FLEX) method to the model and solving the linearized Eliashberg's equation, singlet pairing superconducting phase, which has the doping dependence of Tc consistent with the experimental results, is obtained. The finite temperature quantum Monte Carlo (FTQMC) calculation also supports the FLEX results at least qualitatively.

AB - Superconductivity of a double chain superconductor Pr2 Ba4 Cu7 O15 - δ is investigated on the double chain Hubbard model with realistic values of the hopping parameters, on-site interaction U, and off-site interaction V. By applying the fluctuation exchange (FLEX) method to the model and solving the linearized Eliashberg's equation, singlet pairing superconducting phase, which has the doping dependence of Tc consistent with the experimental results, is obtained. The finite temperature quantum Monte Carlo (FTQMC) calculation also supports the FLEX results at least qualitatively.

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KW - Double chain

KW - Superconductivity

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