Quantum phase transition and sliding Luttinger liquid in coupled t-J chains

Details Quantum phase transition and sliding Luttinger liquid in coupled t-J chains Quantum phase transition and sliding Luttinger liquid in coupled t-J chains

2005-04-13

arxiv.org/abs/cond-mat/0504306v1

Physics

Condensed Matter

Strongly Correlated Electrons

13 pages, 24 figures

Scientific paper

Using a recently proposed perturbative numerical renormalization-group algorithm, we explore the connection between quantum criticality and the emergence of Luttinger liquid physics in $t-J$ chains coupled by frustrated interactions. This study is built on an earlier finding that at the maximally frustrated point, the ground state of weakly-coupled Heisenberg chains is disordered, the transverse exchanges being irrelevant. This result is extended here to transverse couplings up to $J_{\perp}=0.6$, and we argue that it may also be valid at the isotropic point. A finite size analysis of coupled Heisenberg chains in the vicinity of the maximally frustrated point confirms that the transverse spin-spin correlations decay exponentially while the longitudinal ones revert to those of decoupled chains. We find that this behavior persists upon moderate hole doping $x \alt 0.75$. For larger doping, the frustration becomes inactive and the quantum critical point is suppressed.

Affiliated with

Also associated with

No associations

Rating

Quantum phase transition and sliding Luttinger liquid in coupled t-J chains 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 Quantum phase transition and sliding Luttinger liquid in coupled t-J chains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum phase transition and sliding Luttinger liquid in coupled t-J chains will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-249091