Chirality-driven mass enhancement in the kagome Hubbard model

Details Chirality-driven mass enhancement in the kagome Hubbard model Chirality-driven mass enhancement in the kagome Hubbard model

2010-02-19

arxiv.org/abs/1002.3691v1

Phys. Rev. Lett. 104, 106409 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures. Accepted for publication in Physical Review Letters

Scientific paper

We investigate the quasiparticle-mass enhancement in the Hubbard model on the frustrated kagome lattice by using a cluster extension of the dynamical mean-field theory. By analyzing the cluster density matrix, we find a hierarchy of energy scale among charge, spin, and chirality degrees of freedom. Large amount of entropy associated with the chirality is released at a much lower temperature than other energy scales for spin and charge fluctuations, leading to a sharp peak in the specific heat and the single-particle spectrum. The results manifest a generic mechanism of mass enhancement driven by an emergent composite degree of freedom under geometrical frustration.

Affiliated with

Also associated with

No associations

Rating

Chirality-driven mass enhancement in the kagome Hubbard model 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 Chirality-driven mass enhancement in the kagome Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chirality-driven mass enhancement in the kagome Hubbard model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-363434