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Competition of Phonons and Magnetic Interaction in One-Dimensional Fermion Systems | | D.Braak
; F.Sievers
; K.Ziegler
; | | Date: |
25 May 1994 | | Subject: | cond-mat | | Abstract: | We consider a system of spin-dependent fermions on a one-dimensional lattice which is coupled to phonons. The phonons create either a Peierls instability by breaking the translational invariance or create long range correlations. On the other hand, there is a spin-dependent Hubbard-like interaction which competes with the effective fermion-fermion interaction induced by the phonons. We investigate the competition of both interactions using a renormalization group calculation for weak interaction. The renormalization group transformation creates a third interaction. It turns out that non-interacting fermions represent a semi-stable fixed point of the fermion system. | | Source: | arXiv, cond-mat/9405070 | | Services: | Forum | Review | PDF | Favorites | |
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