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Issue 28, 2015
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Charge density waves in individual nanoribbons of orthorhombic-TaS3

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Abstract

Orthorhombic-TaS3 is a quasi-1D material that undergoes a Peierls' transition to become a charge density wave conductor at low temperatures. Electrical transport measurements of individual single-crystalline TaS3 nanoribbons prepared by a novel bottom-up method from elemental precursors indicate a depression of the Peierls' ordering temperature to 205 K, broadening of the electric-field-induced depinning of the charge density wave below the Peierls' transition temperature, and a greatly increased threshold voltage for nucleation of charge density wave dislocations posited to be a result of surface confinement and finite size effects. Single-nanoribbon measurements of broad-band noise indicate discrete phase slip events near the depinning threshold. Three distinct regimes are identified with the normalized noise spectrum showing a distinctive maxima near the threshold voltage for depinning of the charge density wave, corresponding to sampling of different metastable states that balance ordered and sliding charge density waves.

Graphical abstract: Charge density waves in individual nanoribbons of orthorhombic-TaS3

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Publication details

The article was received on 10 Jun 2015, accepted on 16 Jun 2015 and first published on 17 Jun 2015


Article type: Paper
DOI: 10.1039/C5CP03351A
Citation: Phys. Chem. Chem. Phys., 2015,17, 18374-18379
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    Charge density waves in individual nanoribbons of orthorhombic-TaS3

    K. E. Farley, Z. Shi, G. Sambandamurthy and S. Banerjee, Phys. Chem. Chem. Phys., 2015, 17, 18374
    DOI: 10.1039/C5CP03351A

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