Low-energy dynamics of the one-dimensional multichannel Kondo-Heisenberg lattice

Citation
N. Andrei et E. Orignac, Low-energy dynamics of the one-dimensional multichannel Kondo-Heisenberg lattice, PHYS REV B, 62(6), 2000, pp. R3596-R3599
Citations number
35
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
6
Year of publication
2000
Pages
R3596 - R3599
Database
ISI
SICI code
0163-1829(20000801)62:6<R3596:LDOTOM>2.0.ZU;2-1
Abstract
We determine exactly the fixed point Hamiltonian of the one-dimensional mul tichannel Kondo-Heisenberg lattice model for any number of channels N great er than or equal to 2. It is found to belong to a new class of non-Fermi-li quid fixed points, different from the usual Luttinger or Luther-Emery liqui ds. The fixed point describes an anomalous singlet with nontrivial internal dynamics manifesting itself in unconventional order. We compute the correl ation functions of the various conventional and composite order parameters of the system, and And that for N less than or equal to 4 the composite ord er parameters induce the dominant instabilities.