A quantum Monte Carlo study on the superconducting Kosterlitz-Thouless transition of the attractive Hubbard model on a triangular lattice

Abstract

We study the superconducting Kosterlitz-Thouless transition of the attractive Hubbard model on a two-dimensional triangular lattice using auxiliary field quantum Monte Carlo method for system sizes up to $12\times 12$ sites. Combining three methods to analyze the numerical data, we find, for the attractive interaction of $U=-4t$, that the transition temperature stays almost constant within the band filling range of $1.0<n<1.4$, while it is found to be much lower in the $n<1$ region.

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References in corpus (4)

• Heavy-fermion superconductivity in CeCoIn5 at 2.3K
• Critical temperature for the two-dimensional attractive Hubbard Model
• Quantum Monte Carlo study of the 3D attractive Hubbard model
• Phase diagram of underdoped cuprate superconductors: effect of Cooper-pair phase fluctuations

Cited by in corpus (5)

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• Precision Many-Body Study of the Berezinskii-Kosterlitz-Thouless Transition and Temperature-Dependent Properties in the Two-Dimensional Fermi Gas
• Rigorous solution of a Hubbard model extended by nearest-neighbor Coulomb and isotropic exchange interaction on a triangle and tetrahedron