Symmetry of superconductivity in fullerides by repulsive interaction model

S. Yamazaki; Y. Kuramoto

doi:10.1016/j.phpro.2013.04.044

Symmetry of superconductivity in fullerides by repulsive interaction model

S. Yamazaki, Y. Kuramoto

研究成果: Conference article › 査読

抄録

A repulsive interaction model for superconductivity (SC) in fullerides is studied using a second-order perturbation theory with respect to Coulomb repulsion. With the purely repulsive interaction, T_g and E _g pairs are the most stable in bcc and fcc lattices, respectively. In addition to anisotropic SC pairs, the s-wave (A_g) pair can also be formed in both lattice models. Multiple Fermi surfaces in fullerides stabilize the A_g pairs. We propose that the cooperation between Coulomb repulsion and electron-phonon interaction is responsible for the high T _c

本文言語	English
ページ（範囲）	29-32
ページ数	4
ジャーナル	Physics Procedia
巻	45
DOI	https://doi.org/10.1016/j.phpro.2013.04.044
出版ステータス	Published - 2013
外部発表	はい
イベント	25th International Symposium on Superconductivity, ISS 2012 - Tokyo, Japan 継続期間: 2012 12月 3 → 2012 12月 5

ASJC Scopus subject areas

物理学および天文学（全般）

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10.1016/j.phpro.2013.04.044

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title = "Symmetry of superconductivity in fullerides by repulsive interaction model",

abstract = "A repulsive interaction model for superconductivity (SC) in fullerides is studied using a second-order perturbation theory with respect to Coulomb repulsion. With the purely repulsive interaction, Tg and E g pairs are the most stable in bcc and fcc lattices, respectively. In addition to anisotropic SC pairs, the s-wave (Ag) pair can also be formed in both lattice models. Multiple Fermi surfaces in fullerides stabilize the Ag pairs. We propose that the cooperation between Coulomb repulsion and electron-phonon interaction is responsible for the high T c",

keywords = "Coulomb repulsion, Fulleride, Multiband",

author = "S. Yamazaki and Y. Kuramoto",

note = "Funding Information: One of the authors (S.Y.) is supported by the global COE program of the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT).; 25th International Symposium on Superconductivity, ISS 2012 ; Conference date: 03-12-2012 Through 05-12-2012",

year = "2013",

doi = "10.1016/j.phpro.2013.04.044",

language = "English",

volume = "45",

pages = "29--32",

journal = "Physics Procedia",

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TY - JOUR

T1 - Symmetry of superconductivity in fullerides by repulsive interaction model

AU - Yamazaki, S.

AU - Kuramoto, Y.

N1 - Funding Information: One of the authors (S.Y.) is supported by the global COE program of the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT).

PY - 2013

Y1 - 2013

N2 - A repulsive interaction model for superconductivity (SC) in fullerides is studied using a second-order perturbation theory with respect to Coulomb repulsion. With the purely repulsive interaction, Tg and E g pairs are the most stable in bcc and fcc lattices, respectively. In addition to anisotropic SC pairs, the s-wave (Ag) pair can also be formed in both lattice models. Multiple Fermi surfaces in fullerides stabilize the Ag pairs. We propose that the cooperation between Coulomb repulsion and electron-phonon interaction is responsible for the high T c

AB - A repulsive interaction model for superconductivity (SC) in fullerides is studied using a second-order perturbation theory with respect to Coulomb repulsion. With the purely repulsive interaction, Tg and E g pairs are the most stable in bcc and fcc lattices, respectively. In addition to anisotropic SC pairs, the s-wave (Ag) pair can also be formed in both lattice models. Multiple Fermi surfaces in fullerides stabilize the Ag pairs. We propose that the cooperation between Coulomb repulsion and electron-phonon interaction is responsible for the high T c

KW - Coulomb repulsion

KW - Fulleride

KW - Multiband

UR - http://www.scopus.com/inward/record.url?scp=84902314174&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84902314174&partnerID=8YFLogxK

U2 - 10.1016/j.phpro.2013.04.044

DO - 10.1016/j.phpro.2013.04.044

M3 - Conference article

AN - SCOPUS:84902314174

VL - 45

SP - 29

EP - 32

JO - Physics Procedia

JF - Physics Procedia

SN - 1875-3892

T2 - 25th International Symposium on Superconductivity, ISS 2012

Y2 - 3 December 2012 through 5 December 2012

ER -

Symmetry of superconductivity in fullerides by repulsive interaction model

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