Cooper pairing in a two-band Hubbard model: A quantum Monte Carlo study
作者： Kazuhiko Kuroki , Hideo Aoki
DOI: 10.1016/0038-1098(90)91049-M
关键词: Hubbard model 、 Condensed matter physics 、 Singlet state 、 Atomic orbital 、 Superconductivity 、 Pairing 、 Quantum Monte Carlo 、 Physics 、 Cooper pair 、 Monte Carlo method
摘要: Abstract Quantum Monte Carlo method is used to study a two-band Hubbard model as of high T C superconductors. When the Coulomb interactions are introduced between two (α, β) orbitals, an effective attraction carriers in β (doped) band shown arise appropriate condition. The enhances on-site singlet Cooper pair-pair correlation and suppresses antiferromagnetic spin-spin α band. This provides mechanism superconductivity specific strongly correlated systems.
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