Fluctuation-driven superconductivity in Sr2RuO4 from weak repulsive interactions

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Standard

Fluctuation-driven superconductivity in Sr2RuO4 from weak repulsive interactions. / Romer, A. T.; Andersen, B. M.

I: Modern Physics Letters B, Bind 34, Nr. 19-20, 2040052, 20.07.2020.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Romer, AT & Andersen, BM 2020, 'Fluctuation-driven superconductivity in Sr2RuO4 from weak repulsive interactions', Modern Physics Letters B, bind 34, nr. 19-20, 2040052. https://doi.org/10.1142/S0217984920400527

APA

Romer, A. T., & Andersen, B. M. (2020). Fluctuation-driven superconductivity in Sr2RuO4 from weak repulsive interactions. Modern Physics Letters B, 34(19-20), [2040052]. https://doi.org/10.1142/S0217984920400527

Vancouver

Romer AT, Andersen BM. Fluctuation-driven superconductivity in Sr2RuO4 from weak repulsive interactions. Modern Physics Letters B. 2020 jul. 20;34(19-20). 2040052. https://doi.org/10.1142/S0217984920400527

Author

Romer, A. T. ; Andersen, B. M. / Fluctuation-driven superconductivity in Sr2RuO4 from weak repulsive interactions. I: Modern Physics Letters B. 2020 ; Bind 34, Nr. 19-20.

Bibtex

@article{a93e2ca5d64440c6a2492463adf02ea0,
title = "Fluctuation-driven superconductivity in Sr2RuO4 from weak repulsive interactions",
abstract = "We provide results for the leading superconducting instabilities for a model pertaining to Sr2RuO4 obtained within spin-fluctuation mediated superconductivity in the very weak-coupling limit. The theory incorporates spin-orbit coupling (SOC) effects both in the band structure and in the pairing kernel in the form of associated magnetic anisotropies. The leading superconducting phase is found to be d(x2-y2) and a nodal s-wave state. However, the odd-parity helical solution can become leading either for small SOC and Hund's coupling J in the weak U-limit, or in the opposite limit with large SOC and J at larger values of the Hubbard-U. The odd-parity chiral solution is never found to be leading. Finally we discuss the form of the resulting superconducting spectral gaps in the different explored parameter regimes.",
keywords = "Fluctuation-driven superconductivity, Sr2RuO4, spin-orbit coupling, BAND-STRUCTURE, GAP",
author = "Romer, {A. T.} and Andersen, {B. M.}",
year = "2020",
month = jul,
day = "20",
doi = "10.1142/S0217984920400527",
language = "English",
volume = "34",
journal = "Modern Physics Letters B",
issn = "0217-9849",
publisher = "World Scientific Publishing Co. Pte. Ltd.",
number = "19-20",

}

RIS

TY - JOUR

T1 - Fluctuation-driven superconductivity in Sr2RuO4 from weak repulsive interactions

AU - Romer, A. T.

AU - Andersen, B. M.

PY - 2020/7/20

Y1 - 2020/7/20

N2 - We provide results for the leading superconducting instabilities for a model pertaining to Sr2RuO4 obtained within spin-fluctuation mediated superconductivity in the very weak-coupling limit. The theory incorporates spin-orbit coupling (SOC) effects both in the band structure and in the pairing kernel in the form of associated magnetic anisotropies. The leading superconducting phase is found to be d(x2-y2) and a nodal s-wave state. However, the odd-parity helical solution can become leading either for small SOC and Hund's coupling J in the weak U-limit, or in the opposite limit with large SOC and J at larger values of the Hubbard-U. The odd-parity chiral solution is never found to be leading. Finally we discuss the form of the resulting superconducting spectral gaps in the different explored parameter regimes.

AB - We provide results for the leading superconducting instabilities for a model pertaining to Sr2RuO4 obtained within spin-fluctuation mediated superconductivity in the very weak-coupling limit. The theory incorporates spin-orbit coupling (SOC) effects both in the band structure and in the pairing kernel in the form of associated magnetic anisotropies. The leading superconducting phase is found to be d(x2-y2) and a nodal s-wave state. However, the odd-parity helical solution can become leading either for small SOC and Hund's coupling J in the weak U-limit, or in the opposite limit with large SOC and J at larger values of the Hubbard-U. The odd-parity chiral solution is never found to be leading. Finally we discuss the form of the resulting superconducting spectral gaps in the different explored parameter regimes.

KW - Fluctuation-driven superconductivity

KW - Sr2RuO4

KW - spin-orbit coupling

KW - BAND-STRUCTURE

KW - GAP

U2 - 10.1142/S0217984920400527

DO - 10.1142/S0217984920400527

M3 - Journal article

VL - 34

JO - Modern Physics Letters B

JF - Modern Physics Letters B

SN - 0217-9849

IS - 19-20

M1 - 2040052

ER -

ID: 247157628