Kekul\'e superconductivity and antiferromagnetism on the graphene lattice
Phys. Rev. B 93, 155149 (2016) We investigate superconducting order in the extended Hubbard model on the two-dimensional graphene lattice using the variational cluster approximation (VCA) with an exact diagonalization solver at zero temperature. Building on the results of Ref.$[1]$, which identified...
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| Language | English |
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26.01.2016
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| Abstract | Phys. Rev. B 93, 155149 (2016) We investigate superconducting order in the extended Hubbard model on the
two-dimensional graphene lattice using the variational cluster approximation
(VCA) with an exact diagonalization solver at zero temperature. Building on the
results of Ref.$[1]$, which identified triplet $p$- and $p+ip$-wave
superconductivity as the most favored pairing symmetries in that model, we
place uniform SC solutions in competition with the proposed nonuniform Kekul\'e
($p+ip$-K) superconducting pattern proposed in Ref.$[2]$. We find that the
$p+ip$-K solution is in fact the most favored pairing in most of the phase
diagram. In addition, we show that antiferromagnetism can co-exist with the
$p+ip$-K state and that both orders are enhanced by their coexistence. |
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| AbstractList | Phys. Rev. B 93, 155149 (2016) We investigate superconducting order in the extended Hubbard model on the
two-dimensional graphene lattice using the variational cluster approximation
(VCA) with an exact diagonalization solver at zero temperature. Building on the
results of Ref.$[1]$, which identified triplet $p$- and $p+ip$-wave
superconductivity as the most favored pairing symmetries in that model, we
place uniform SC solutions in competition with the proposed nonuniform Kekul\'e
($p+ip$-K) superconducting pattern proposed in Ref.$[2]$. We find that the
$p+ip$-K solution is in fact the most favored pairing in most of the phase
diagram. In addition, we show that antiferromagnetism can co-exist with the
$p+ip$-K state and that both orders are enhanced by their coexistence. |
| Author | Diarra, M. N Faye, J. P. L Sénéchal, D |
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| BackLink | https://doi.org/10.48550/arXiv.1601.07076$$DView paper in arXiv https://doi.org/10.1103/PhysRevB.93.155149$$DView published paper (Access to full text may be restricted) |
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| Snippet | Phys. Rev. B 93, 155149 (2016) We investigate superconducting order in the extended Hubbard model on the
two-dimensional graphene lattice using the variational... |
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| Title | Kekul\'e superconductivity and antiferromagnetism on the graphene lattice |
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