Room temperature depinning of the charge-density waves in quasi-two-dimensional 1T-TaS2 devices - CNRS - Centre national de la recherche scientifique
Journal Articles Applied Physics Letters Year : 2021

Room temperature depinning of the charge-density waves in quasi-two-dimensional 1T-TaS2 devices

A. Mohammadzadeh
A. Rehman
F. Kargar
S. Rumyantsev
J. Smulko
W. Knap
R. Lake
A. Balandin

Abstract

We report on the depinning of nearly commensurate charge-density waves in 1T-TaS2 thin films at room temperature. A combination of the differential current–voltage measurements with the low-frequency noise spectroscopy provides unambiguous means for detecting the depinning threshold field in quasi-2D materials. The depinning process in 1T-TaS2 is not accompanied by an observable abrupt increase in electric current—in striking contrast to depinning in the conventional charge-density-wave materials with quasi-1D crystal structure. We explained it by the fact that the current density from the charge-density waves in the 1T-TaS2 devices is orders of magnitude smaller than the current density of the free carriers available in the discommensuration network surrounding the commensurate charge-density wave islands. The depinning fields in 1T-TaS2 thin-film devices are several orders of magnitude larger than those in quasi-1D van der Waals materials. Obtained results are important for the proposed applications of the charge-density wave devices in electronics.

Dates and versions

hal-04840450 , version 1 (16-12-2024)

Identifiers

Cite

A. Mohammadzadeh, A. Rehman, F. Kargar, S. Rumyantsev, J. Smulko, et al.. Room temperature depinning of the charge-density waves in quasi-two-dimensional 1T-TaS2 devices. Applied Physics Letters, 2021, 118 (22), ⟨10.1063/5.0055401⟩. ⟨hal-04840450⟩
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