Finite-temperature transport in finite-size Hubbard rings in the strong-coupling limit
Finite-temperature transport in finite-size Hubbard rings in the strong-coupling limit
We study the current, the curvature of levels, and the finite temperature charge stiffness, D(T,L), in the strongly correlated limit, U>>t, for Hubbard rings of L sites, with U the on-site Coulomb repulsion and t the hopping integral. Our study is done for finite-size systems and any band filling. Up …