Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-04-17
Phys. Rev. B 69, 054426 (2004)
Physics
Condensed Matter
Strongly Correlated Electrons
15 pages, 8 figures
Scientific paper
10.1103/PhysRevB.69.054426
We analyze the Hertz-Moriya-Millis theory of an antiferromagnetic quantum critical point, in the marginal case of two dimensions (d=2,z=2). Up to next-to-leading order in the number of components (N) of the field, we find that logarithmic corrections do not lead to an enhancement of the Landau damping. This is in agreement with a renormalization-group analysis, for arbitrary N. Hence, the logarithmic effects are unable to account for the behavior reportedly observed in inelastic neutron scattering experiments on CeCu_{6-x}Au_x. We also examine the extended dynamical mean-field treatment (local approximation) of this theory, and find that only subdominant corrections to the Landau damping are obtained within this approximation, in contrast to recent claims.
Florens Serge
Georges Antoine
Kotliar Gabriel
Pankov Sergey
Sachdev Subir
No associations
LandOfFree
Non-Fermi liquid behavior from two-dimensional antiferromagnetic fluctuations: a renormalization-group and large-N analysis 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 Non-Fermi liquid behavior from two-dimensional antiferromagnetic fluctuations: a renormalization-group and large-N analysis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-Fermi liquid behavior from two-dimensional antiferromagnetic fluctuations: a renormalization-group and large-N analysis will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-595851