Current-current correlations in the three-band model for two-leg CuO ladders

Details Current-current correlations in the three-band model for two-leg CuO ladders Current-current correlations in the three-band model for two-leg CuO ladders

2008-04-18

arxiv.org/abs/0804.3085v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

We study current-current correlations in the three-band Hubbard model for two-leg CuO ladders using the density-matrix renormalization group method. We find that these correlations decrease exponentially with distance for low doping but as a power law for higher doping. Their pattern is compatible with the circulating current (CC) phase which Varma has proposed to explain the pseudo-gaped metallic phase in underdoped high-temperature superconductors. However, for model parameters leading to a realistic ground state in the undoped ladder, the current fluctuations decay faster than the d-wave-like pairing correlations in the doped state. Thus we conclude that no phase with CC order or dominant CC fluctuations occur in the three-band model of two-leg CuO ladders.

Affiliated with

Also associated with

No associations

Rating

Current-current correlations in the three-band model for two-leg CuO ladders 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 Current-current correlations in the three-band model for two-leg CuO ladders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current-current correlations in the three-band model for two-leg CuO ladders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-304650