Kondo effect in "bad metals"
| dc.creator | Burdin, S. | |
| dc.creator | Zlatic, V. | |
| dc.date | 2002-12-10 | |
| dc.date.accessioned | 2026-07-07T02:48:38Z | |
| dc.date.available | 2026-07-07T02:48:38Z | |
| dc.description | 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. | |
| dc.description | 4 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0212222 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0212222 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/20486 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Superconductivity | |
| dc.title | Kondo effect in "bad metals" | |
| dc.type | text |