The evolution of the Non-Fermi Liquid behavior of BaVS$_3$ under high pressure
| dc.creator | Barišić, N. | |
| dc.creator | Akrap, A. | |
| dc.creator | Berger, H. | |
| dc.creator | Forró, L. | |
| dc.date | 2007-12-20 | |
| dc.date.accessioned | 2026-07-07T08:50:35Z | |
| dc.date.available | 2026-07-07T08:50:35Z | |
| dc.description | Temperature, pressure, and magnetic field dependencies of the resistivity of BaVS$_3$ were measured above the critical pressure of $p_{cr}$=2 GPa, which is associated with the zero temperature insulator-to-metal (MI) transition. The resistivity exhibits the $T^n$ temperature dependence below $T_g\approx$15 K, with $n$ of 1.5 at $p_{cr}$, which increases continuously with pressure towards 2. This is interpreted as a crossover from non-Fermi (NFL) to Fermi-liquid (FL) behavior. Although the spin configuration of the $e_g$ electrons influences the charge propagation, the NFL behavior is attributed to the pseudogap that appears in the single particle spectrum of the $d_z^2$ electrons related to large quasi-one dimensional (Q-1d) 2$k_F$-CDW fluctuations. The non-monotonic magnetic field dependence of $Δ$$ρ$/$ρ$ reveals a characteristic field $B_0\approx$12 T attributed to the full suppression of the pseudogap. | |
| dc.description | 4 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0712.3393 | |
| dc.identifier | http://arxiv.org/abs/0712.3393 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/144651 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | The evolution of the Non-Fermi Liquid behavior of BaVS$_3$ under high pressure | |
| dc.type | text |