In the 2D attractive Hubbard model, Tc is enhanced near Van Hove singularities only for weak interactions, while the global maximum Tc occurs at intermediate coupling away from the singularity.
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Vacuum fluctuations of magnetic flux in an LC resonator mediate electron pairing in 2D systems to form a pair-density wave topological chiral superconductor with Tc of several Kelvin or higher.
DMRG on honeycomb cylinders and slave-boson mean-field theory find a robust t'-induced d-wave SC phase coexisting with armchair stripes for moderate t', transitioning to uniform nematic SC at large t' for doping 1/8.
citing papers explorer
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Superconductivity near two-dimensional Van Hove singularities: a determinant quantum Monte Carlo study
In the 2D attractive Hubbard model, Tc is enhanced near Van Hove singularities only for weak interactions, while the global maximum Tc occurs at intermediate coupling away from the singularity.
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Chiral electron-fluxon superconductivity in circuit quantum magnetostatics
Vacuum fluctuations of magnetic flux in an LC resonator mediate electron pairing in 2D systems to form a pair-density wave topological chiral superconductor with Tc of several Kelvin or higher.
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Superconductivity and competing orders in honeycomb $t$-$J$ model: interplay of lattice geometry and next-nearest-neighbor hopping
DMRG on honeycomb cylinders and slave-boson mean-field theory find a robust t'-induced d-wave SC phase coexisting with armchair stripes for moderate t', transitioning to uniform nematic SC at large t' for doping 1/8.