Evidence for two electronic components in NaxCoO2 (x = 0.7-0.75)
| dc.creator | Brühwiler, M. | |
| dc.creator | Batlogg, B. | |
| dc.creator | Kazakov, S. M. | |
| dc.creator | Karpinski, J. | |
| dc.date | 2003-09-12 | |
| dc.date.accessioned | 2026-07-07T02:53:25Z | |
| dc.date.available | 2026-07-07T02:53:25Z | |
| dc.description | Thermodynamic and transport measurements on NaxCoO2 (x ~ 0.7-0.75) over a wide temperature range reveal a strongly enhanced low energy excitation spectrum. The zero-field specific heat and resistance at low temperature are proportional to T^n with n<1, in sharp contrast to behavior found in ordinary Landau Fermi-liquid metals. For temperatures below ~5 K this unusual excitation seen in the specific heat is partially suppressed in a magnetic field, following a T/B scaling. The specific heat reduction at low T is partially compensated by an increase at higher temperature. A quantitative comparison with the magnetoresistance and the thermopower indicates that the low- energy electronic state requires a description beyond the single band model. | |
| dc.description | 13 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0309311 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0309311 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/22208 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Evidence for two electronic components in NaxCoO2 (x = 0.7-0.75) | |
| dc.type | text |