Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-08-27
Phys. Rev. B 80, 115116 (2009)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 4 figures
Scientific paper
We derive a Kondo Lattice model with a correlated conduction band from a two-band Hubbard Hamiltonian. This mapping allows us to describe the emergence of a robust pairing mechanism in a model that only contains repulsive interactions. The mechanism is due to topological confinement and results from the interplay between antiferromagnetism and delocalization. By using Density-Matrix-Renormalization-Group (DMRG), we demonstrate that this mechanism leads to dominant superconducting correlations in a 1D-system.
Al-Hassanieh Khaled A.
Batista Cristian D.
Feiguin Adrian E.
Sengupta Pinaki
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