Effects of disorder on two coupled Hubbard chains at half-filling

Details Effects of disorder on two coupled Hubbard chains at half-filling Effects of disorder on two coupled Hubbard chains at half-filling

1997-08-14

arxiv.org/abs/cond-mat/9708097v1

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, RevTex, 3 eps figures

Scientific paper

10.1103/PhysRevB.56.9360

We investigate the effects of quenched disorder on two chain Hubbard models at half-filling by using bosonization and renormalization group methods. It is found that the sufficiently strong forward scattering due to impurities and the random gauge field, which is generated by impurity backward scattering, destroy the charge gaps as well as the spin gaps. Random backward scattering due to impurities then drives the resulting massless phase to the Anderson localization phase. For intermediate strength of random forward scattering, however, the spin gaps still survive, and only one of the charge gaps is collapsed. In this parameter region, one of the charge degrees of freedom is in the Anderson localized state, while the other one is still in the massive state.

Affiliated with

Also associated with

No associations

Rating

Effects of disorder on two coupled Hubbard chains at half-filling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Effects of disorder on two coupled Hubbard chains at half-filling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of disorder on two coupled Hubbard chains at half-filling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-309225