Kondo effect in "bad metals"

Details Kondo effect in "bad metals" Kondo effect in "bad metals"

2002-12-10

arxiv.org/abs/cond-mat/0212222v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 1 figure

Scientific paper

We study the low-temperature properties of a Kondo lattice using the large-N formalism. For a singular density of conduction states (DOS), we generalize the single-impurity result of Withoff and Fradkin: the strong-coupling fixed point becomes irrelevant if the DOS vanishes at the Fermi level E_F. However, for E_F close enough to the singularity, and close to half-filling, the Kondo temperature, $T_K$, can become much smaller than the characteristic Fermi liquid scale. At T=0, a meta-magnetic transition occurs at the critical magnetic field H_c ~ (k_B/mu_B) T_K. Our results provide a qualitative explanation for the behavior of the YbInCu_4 compound below the valence-change transition.

Affiliated with

Also associated with

No associations

Rating

Kondo effect in "bad metals" 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 Kondo effect in "bad metals", we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kondo effect in "bad metals" will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-74749