Finite-temperature properties of the Hubbard chain with bond-charge interaction
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منابع مشابه
Exact solution of a Hubbard chain with bond-charge interaction.
We obtain the exact solution of a general Hubbard chain with kinetic energy t, bond-charge interaction X and on-site interaction U with the only restriction t = X. At zero temperature and half filling, the model exhibits a Mott transition at U = 4t. In the metallic phase and near half filling, superconducting states are part of the degenerate ground state and are favored for small U if the syst...
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We study the effects of bond-charge interaction (or correlated hopping) on the properties of the extended (i.e., with both on-site (U) and nearest-neighbor (V ) repulsions) Hubbard model in one dimension at half-filling. Energy gaps and correlation functions are calculated by Lanczos diagonalization on finite systems. We find that, irrespective of the sign of the bond-charge interaction, X, the...
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تاریخ انتشار 2015