Large violation of Wiedemann Franz law in Luttinger liquids

Details Large violation of Wiedemann Franz law in Luttinger liquids Large violation of Wiedemann Franz law in Luttinger liquids

2009-03-18

arxiv.org/abs/0903.3054v2

Phys. Rev. Lett. 103, 096402 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

Added reference

Scientific paper

10.1103/PhysRevLett.103.096402

We show that in weakly disordered Luttinger liquids close to a commensurate filling the ratio of thermal conductivity kappa and electrical conductivity sigma can deviate strongly from the Wiedemann Franz (WF) law valid for Fermi liquids scattering from impurities. In the regime where the Umklapp scattering rate Gamma_U is much larger than the impurity scattering rate Gamma_imp, the Lorenz number L = (kappa/sigma T) rapidly changes from very large values, L ~ (Gamma_U/Gamma_imp) >> 1 at the commensurate point to very small values, L ~ (Gamma_imp/Gamma_U) << 1 for a slightly doped system. This surprising behavior is a consequence of approximate symmetries existing even in the presence of strong Umklapp scattering.

Affiliated with

Also associated with

No associations

Rating

Large violation of Wiedemann Franz law in Luttinger liquids 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 Large violation of Wiedemann Franz law in Luttinger liquids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large violation of Wiedemann Franz law in Luttinger liquids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-400915