title: Negative resistance and local charge-density-wave dynamics.
abstract: Charge-density-wave (CDW) 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 quasiparticles feel: the force on the CDW is merely caused by a difference of the electric potentials, while the quasiparticle current is governed by a difference of the electrochemical potentials.
authors.affiliation: Department of Applied Sciences and DIMES, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
authors.forename: H S
authors.initials: HS
authors.lastname: van der Zant
authors.forename: E
authors.initials: E
authors.lastname: Slot
authors.forename: S V
authors.initials: SV
authors.lastname: Zaitsev-Zotov
authors.forename: S N
authors.initials: SN
authors.lastname: Artemenko