Persistent current of two-chain Hubbard model with impurities

Details Persistent current of two-chain Hubbard model with impurities Persistent current of two-chain Hubbard model with impurities

1998-04-24

arxiv.org/abs/cond-mat/9804265v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 Pages, RevTeX, No figures, Submitted to PRB

Scientific paper

10.1103/PhysRevB.58.3486

The interplay between impurities and interactions is studied in the gapless phase of two-chain Hubbard model in order to see how the screening of impurity potentials due to repulsive interactions in single-chain model will be changed by increasing the number of channels. Renormalization group calculations show that charge stiffness, and hence persistent current, of the two-chain model are less enhanced by interactions than single chain case.

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