Effects of Berry phase and instantons in one dimensional Kondo-Heisenberg model

Details Effects of Berry phase and instantons in one dimensional Kondo-Heisenberg model Effects of Berry phase and instantons in one dimensional Kondo-Heisenberg model

2010-12-29

arxiv.org/abs/1012.6041v3

Phys. Rev. Lett. 107, 126404 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages; replaced with the version published in PRL

Scientific paper

10.1103/PhysRevLett.107.126404

Motivated by the global phase diagram of antiferromagnetic heavy-fermion metals, we study the Kondo effect from the perspective of a nonlinear sigma model in the one dimensional Kondo-Heisenberg model. We focus on the effects of the instanton configurations of the sigma-model field and the associated Berry phase. Guided by the results derived using bosonization methods, we demonstrate that the Kondo singlet formation is accompanied by an emergent Berry phase. This Berry phase also captures the competition between the Kondo-singlet formation and spin Peierls correlations. Related effects are likely to be realized in Kondo lattice systems in higher dimensions.

Affiliated with

Also associated with

No associations

Rating

Effects of Berry phase and instantons in one dimensional Kondo-Heisenberg 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 Effects of Berry phase and instantons in one dimensional Kondo-Heisenberg model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of Berry phase and instantons in one dimensional Kondo-Heisenberg model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-399991