Journal Articles Physical Review B: Condensed Matter (1978-1997) Year : 1987

Defect-concentration dependence of the charge-density-wave transport in tetrathiafulvalene tetracyanoquinodimethane

Abstract

The effect of electron-irradiation-induced defects on the non-Ohmic dc conductivity of tetrathiafulvalene tetracyanoquinodimethane (TTF-TCNQ) has been studied. The threshold field (ET) for non-Ohmic transport increases linearly with the defect concentration. This impurity study lends strong support to the explanation of the nonlinear conductivity in TTF-TCNQ by the depinning of the charge-density-wave condensate in strong electric fields. Both the nonlinear current and the Ohmic conductivity present a similar temperature dependence in the Peierls state.

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hal-04944316 , version 1 (20-03-2025)

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L. Forro, R. Lacoe, S. Bouffard, D. Jérome. Defect-concentration dependence of the charge-density-wave transport in tetrathiafulvalene tetracyanoquinodimethane. Physical Review B: Condensed Matter (1978-1997), 1987, 35 (11), pp.5884-5886. ⟨10.1103/PhysRevB.35.5884⟩. ⟨hal-04944316⟩
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