Pairing in the Hubbard model: the Cu O cluster versus the Cu-O plane
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چکیده
منابع مشابه
Pairing in the Three-Band Hubbard Model of the Cu-O Plane
By a canonical transformation of the three-band Hubbard model, we introduce an effective Hamiltonian for the propagation of two holes doped into the ground state of the Cu-O plane. When the pair belongs to the B2 or A2 Irreducible Representations of the C4v Group, the bare holes do not interact by the on-site repulsion; the effective interaction between the dressed holes is obtained analyticall...
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We calculate the effective interaction Weff between two holes added to the ground state of the repulsive three-band Hubbard model. To make contact with Cooper theory and with earlier Hubbard model cluster studies, we first use a perturbative canonical transformation, to generate a two-body Hamiltonian. Then, we extend the results to all orders. The approach is exact in principle, and we obtain ...
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ژورنال
عنوان ژورنال: The European Physical Journal B
سال: 2000
ISSN: 1434-6028
DOI: 10.1007/s100510050129