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Persistent current of two-chain Hubbard model with impurities

Hiroyuki Mori
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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.

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Hiroyuki Mori. 1998-04-24. Persistent current of two-chain Hubbard model with impurities. https://doi.org/10.1103/physrevb.58.3486

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