Crossover from Fermi to Non-Fermi Liquid in Two-Dimensional Interacting Fermions

Details Crossover from Fermi to Non-Fermi Liquid in Two-Dimensional Interacting Fermions Crossover from Fermi to Non-Fermi Liquid in Two-Dimensional Interacting Fermions

1998-06-12

arxiv.org/abs/cond-mat/9806158v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures, JPSJ style files, Submitted to J. Phys. Soc. Jpn

Scientific paper

Self-energy at zero temperature is investigated up to the third-order of interaction using one-patch model in two dimensions, whose interaction process corresponds to $g_4$-process of $g$-ology model in one dimension. The self-energy $\Sigma^R({\mib k},\epsilon)$ diverges at $\epsilon=\xi_k$, and the contribution from the particle-hole process in third-order self-energy diagrams has a stronger divergence compared to the one from the particle-particle process. This implies that the loop-cancellation in the forward scattering is insufficient due to the effect of the warping of the Fermi surface. The strong energy dependence of the self-energy in the vicinity of $\epsilon=\xi_k$ implies the existence of the crossover from Fermi to non-Fermi liquid behavior as the momentum becomes away from the Fermi momentum, and this crossover is enhanced as interaction becomes stronger.

Affiliated with

Also associated with

No associations

Rating

Crossover from Fermi to Non-Fermi Liquid in Two-Dimensional Interacting Fermions 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 Crossover from Fermi to Non-Fermi Liquid in Two-Dimensional Interacting Fermions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crossover from Fermi to Non-Fermi Liquid in Two-Dimensional Interacting Fermions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-485778