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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2015
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/1512.00147 |
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| _version_ | 1866909094516883456 |
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| author | Zhang, Li-Da Wu, Xianxin Fan, Heng Yang, Fan Hu, Jiangping |
| author_facet | Zhang, Li-Da Wu, Xianxin Fan, Heng Yang, Fan Hu, Jiangping |
| contents | We investigate the pairing symmetry of the newly synthesized quasi-one-dimension K$_2$Cr$_3$As$_3$ superconductor based on the six-band model. We adopt standard random-phase-approximation to study the Hubbard-Hund model of the system. Our results confirm the conclusions obtained from our previous three-band model: the triplet $p_z$ and $f_{y^3-3x^2y}$ wave pairings serve as the leading pairing symmetries in the weak and strong Hund's rule coupling regimes, respectively. For physically realistic parameters, the triplet $p_z$-wave pairing driven by ferromagnetic fluctuations is the leading pairing symmetry of the system. The consistency between the results of these two models suggests that the obtained $p_z$-wave pairing symmetry is physical and model-independent. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1512_00147 |
| institution | arXiv |
| publishDate | 2015 |
| record_format | arxiv |
| spellingShingle | Revisitation of superconductivity in K$_2$Cr$_3$As$_3$ based on the six-band model Zhang, Li-Da Wu, Xianxin Fan, Heng Yang, Fan Hu, Jiangping Superconductivity We investigate the pairing symmetry of the newly synthesized quasi-one-dimension K$_2$Cr$_3$As$_3$ superconductor based on the six-band model. We adopt standard random-phase-approximation to study the Hubbard-Hund model of the system. Our results confirm the conclusions obtained from our previous three-band model: the triplet $p_z$ and $f_{y^3-3x^2y}$ wave pairings serve as the leading pairing symmetries in the weak and strong Hund's rule coupling regimes, respectively. For physically realistic parameters, the triplet $p_z$-wave pairing driven by ferromagnetic fluctuations is the leading pairing symmetry of the system. The consistency between the results of these two models suggests that the obtained $p_z$-wave pairing symmetry is physical and model-independent. |
| title | Revisitation of superconductivity in K$_2$Cr$_3$As$_3$ based on the six-band model |
| topic | Superconductivity |
| url | https://arxiv.org/abs/1512.00147 |