Odd-frequency superconductivity in the 2D extended Hubbard model

Keiji Yada; Yuichiro Shimokaji; Seiichiro Onari; Yukio Tanaka; Kazumasa Miyake

doi:10.1016/j.jpcs.2008.06.079

Odd-frequency superconductivity in the 2D extended Hubbard model

Keiji Yada, Yuichiro Shimokaji, Seiichiro Onari, Yukio Tanaka, Kazumasa Miyake

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

1 Citation (Scopus)

Abstract

It is an intriguing problem to clarify whether the odd-frequency superconducting state can be derived from a microscopic model or not, where the pairing function has odd parity in frequency. We study the instability of even-frequency and odd-frequency pairings on the extended Hubbard model in a 2D triangular lattice, with off-site Coulomb interaction V and on-site Coulomb interaction U. By using the random phase approximation (RPA), we find that the instability of odd-frequency spin-triplet s-wave pairing can be dominant with increasing V.

Original language	English
Pages (from-to)	3321-3323
Number of pages	3
Journal	Journal of Physics and Chemistry of Solids
Volume	69
Issue number	12
DOIs	https://doi.org/10.1016/j.jpcs.2008.06.079
Publication status	Published - Dec 2008
Externally published	Yes

Keywords

A. Superconductors
D. Phase transitions
D. Spin-density waves
D. Superconductivity

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1016/j.jpcs.2008.06.079

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title = "Odd-frequency superconductivity in the 2D extended Hubbard model",

abstract = "It is an intriguing problem to clarify whether the odd-frequency superconducting state can be derived from a microscopic model or not, where the pairing function has odd parity in frequency. We study the instability of even-frequency and odd-frequency pairings on the extended Hubbard model in a 2D triangular lattice, with off-site Coulomb interaction V and on-site Coulomb interaction U. By using the random phase approximation (RPA), we find that the instability of odd-frequency spin-triplet s-wave pairing can be dominant with increasing V.",

keywords = "A. Superconductors, D. Phase transitions, D. Spin-density waves, D. Superconductivity",

author = "Keiji Yada and Yuichiro Shimokaji and Seiichiro Onari and Yukio Tanaka and Kazumasa Miyake",

year = "2008",

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language = "English",

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T1 - Odd-frequency superconductivity in the 2D extended Hubbard model

AU - Yada, Keiji

AU - Shimokaji, Yuichiro

AU - Onari, Seiichiro

AU - Tanaka, Yukio

AU - Miyake, Kazumasa

PY - 2008/12

Y1 - 2008/12

N2 - It is an intriguing problem to clarify whether the odd-frequency superconducting state can be derived from a microscopic model or not, where the pairing function has odd parity in frequency. We study the instability of even-frequency and odd-frequency pairings on the extended Hubbard model in a 2D triangular lattice, with off-site Coulomb interaction V and on-site Coulomb interaction U. By using the random phase approximation (RPA), we find that the instability of odd-frequency spin-triplet s-wave pairing can be dominant with increasing V.

AB - It is an intriguing problem to clarify whether the odd-frequency superconducting state can be derived from a microscopic model or not, where the pairing function has odd parity in frequency. We study the instability of even-frequency and odd-frequency pairings on the extended Hubbard model in a 2D triangular lattice, with off-site Coulomb interaction V and on-site Coulomb interaction U. By using the random phase approximation (RPA), we find that the instability of odd-frequency spin-triplet s-wave pairing can be dominant with increasing V.

KW - A. Superconductors

KW - D. Phase transitions

KW - D. Spin-density waves

KW - D. Superconductivity

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DO - 10.1016/j.jpcs.2008.06.079

M3 - Article

AN - SCOPUS:57049149578

SN - 0022-3697

VL - 69

SP - 3321

EP - 3323

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 12

ER -

Odd-frequency superconductivity in the 2D extended Hubbard model

Abstract

Keywords

ASJC Scopus subject areas

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