The technique of focused ion beams was applied to a quasi 1D compound NbSe3 possessing the charge density waves (CDW). Here, a micron-width Hall bars stretching transversely to CDW chains were fabricated and studied in high magnetic fields. The complex of observed nonlinear and nonstationary effects is counterintuitive with respect to common notion for CDWs: the conductivity drops below the threshold rather than rising, Shapiro steps are quantized in voltage rather than in current, etc. [1].
The interpretation [1,2] invokes the deformable CDW in a restricted geometry for the quantum limit of carriers in remnant small pockets. In realities of the NbSe3, the carriers are concentrated at the lowest one-two Landau levels forming, at no current, a fractionally (n<1) filled quantum Hall (QH) state.
The gigantic dielectric constant of the CDW reduces the electric field of the Hall voltage directed along the CDW chains allowing for strong
redistributions of the electronic density unthinkable in usual circumstances. At low temperature T<1) filled quantum Hall (QH) state.
The gigantic dielectric constant of the CDW reduces the electric field of the Hall voltage directed along the CDW chains allowing for strong
redistributions of the electronic density unthinkable in usual circumstances. At low temperature T