Can competition between crystal field and Kondo effect cause non-Fermi liquid like behavior?
| dc.creator | Anders, Frithjof B. | |
| dc.creator | Pruschke, Thomas | |
| dc.date | 2005-11-14 | |
| dc.date.accessioned | 2026-07-07T07:36:12Z | |
| dc.date.available | 2026-07-07T07:36:12Z | |
| dc.description | The recently reported unusual behavior of the static and dynamical magnetic susceptibility as well as the specific heat in Ce$_{1-x}$La$_{x}$Ni$_{9}$Ge$_4$ has raised the question of a possible non-Fermi liquid ground state in this material. We argue that for a consistent physical picture the crystal field splitting of two low lying magnetic doublets of the Ce $4f$-shell must be taken into account. Furthermore, we show that for a splitting of the order of the low temperature scale $T^*$ of the system a crossover behavior between an SU(4) and an SU(2) Kondo effect is found. The screening of the two doublets occurs on different temperature scales leading to a different behavior of the magnetic susceptibility and the specific heat at low temperatures. The experimentally accessible temperature regime down to 50mK still lies in the extended crossover regime into a strong coupling Fermi-liquid fixed point. | |
| dc.description | 4 pages, 4 figures, revtex4 | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0511339 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0511339 | |
| dc.identifier | Phys. Rev. Lett. 96, 086404 (2006) | |
| dc.identifier | doi:10.1103/PhysRevLett.96.086404 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/120346 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Can competition between crystal field and Kondo effect cause non-Fermi liquid like behavior? | |
| dc.type | text |