The ultra-high-TP charge-density wave in the monoclinic phase of NbS3
Journal
Journal of Alloys and Compounds
Journal Volume
854
Date Issued
2021
Author(s)
Zybtsev, S.G.
Pokrovskii, V.Y.
Nasretdinova, V.F.
Zaitsev-Zotov, S.V.
Zupanič, E.
van Midden, M.A.
Pai, W.W.
Abstract
We report on high temperature (T) studies of conductivity, σ, of the monoclinic phase of NbS3 (NbS3-II). The compound is shown to be stable up to T∼550 K. Threshold non-linear conductivity and Shapiro steps on the I – V curves can be seen up to TP0 ≈ 450 – 475 K clearly demonstrating sliding of a charge-density wave (CDW). The feature in σ(T) shows that TP0 is the temperature of the formation of this CDW. The charges condensed in this CDW show relatively high density and, at the same time, extremely low mobility. Their mobility appears low in the single-particle states as well, giving a plausible clue to the surprising dielectric-like temperature variation of σ above TP0.
SDGs
Type
journal article