Sliding-Mode Conductivity in NbSe3: Observation of a Threshold Electric Field and Conduction Noise

Anomaly in the dielectric response at the charge-orbital-ordering transition ofPr0.67Ca0.33MnOMercone1, Wahl2, Pautrat3 et al. 2004Phys. Rev. B713410View full textAdd to dashboardCite

“…This type of behavior has been quantitatively explained in CDW systems (such as NbSe 3 or the "blue bronze") as a consequence of the excitation of a collective mode (CM) [25][26][27][28][29][30][31] , but can be also observed in presence of a large dielectric constant which is often fitted by a resistance and a capacitor in parallel in the equivalent circuit. [24][25][26][27][28][29][30][31][32][33][34] In all these measurements, the ac current intensity was chosen small enough to prevent any non linear or heating effects often observed in DC measurements. In light of these considerations it is possible to model the observed ac-response with the equivalent electronic circuit shown in Figure 5 From the above expressions, one can note that the response obtained is that of a Debye relaxation process where the equivalent linear circuit is given by an RC one.…”

Mesoscopic charge-density-wave junctions

“…The sliding motion of the CDW produces remarkable electrical behavior, like non-Ohmic conductivity 6 and narrow band noise. 7 Charge-density waves in bulk systems have already received much attention in the last few decades ͑for an overview see Grüner 8 ͒. Unlike mesoscopic superconducting devices, there has not been much work reported on CDW's in mesoscopic systems so far.…”

Astability and Negative Differential Resistance of the Wigner Solid

“…The RIQHS, however, appears to be unique among the electron solids since it is the only one developing spontaneous narrow band oscillations under dc biasing [12]. Because of the increasing oscillation frequency with an increasing bias current [12], the oscillations in the RIQHS were suggested to be akin to the washboard oscillations found in conventional charge density waves (CDW) [14]. The frequencies of the RIQHS in the kHz range are, however, orders of magnitude lower than the expected washboard frequencies [12].…”