Persistent current of two-chain Hubbard model with impurities

Abstract

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.

4 Pages, RevTeX, No figures, Submitted to PRB

References in corpus (3)

• Effects of disorder on two strongly correlated coupled chains
• Interactions and Disorder in Multi-Channel Quantum Wires
• Effects of disorder on two coupled Hubbard chains at half-filling

Cited by in corpus (1)

• Localizations in coupled electronic chains