Negative Resistance and Local Charge-Density-Wave Dynamics

Details Negative Resistance and Local Charge-Density-Wave Dynamics Negative Resistance and Local Charge-Density-Wave Dynamics

2001-03-21

arxiv.org/abs/cond-mat/0103439v1

Physics

Condensed Matter

Strongly Correlated Electrons

RevTeX, 4 pages with 3 figures, Submitted to PRL

Scientific paper

10.1103/PhysRevLett.87.126401

Charge-density-wave dynamics is studied on a submicron length scale in NbSe_3 and o-TaS_3. Regions of negative absolute resistance are observed in the CDW sliding regime at sufficiently low temperatures. The origin of the negative resistance is attributed to the different forces that the deformed CDW and quasi-particles feel: the force on the CDW is merely caused by a difference of the electric potentials, while the quasi-particle current is governed by a difference of the electrochemical potentials.

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