Non-monotonic resistance noise in the charge density wave pinned state in single nanoribbons of CDW conductor NbSe₃

2014/10/30 by Zhenzhong Shi, Peter M. Marley, Shi, Zhenzhong +7
Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.mes-hall #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.1410.8428

arxiv created 2014/10/30 · arxiv updated 2014/10/31

Abstract

Electrical transport and broadband resistance noise measurements in an ultra low frequency window (30 mHz - 8 Hz) are carried out in single nanoribbon devices of charge density wave (CDW) conductor NbSe₃. In the temperature and electric field range where the CDW is expected to be completed pinned by residual impurities, a hitherto unseen non-monotonic behavior in the noise magnitude vs. electric field is observed. This behavior can be attributed to the proliferation of thermally activated phase slip events and this idea is supported by the observation of a smeared activated behavior described by the Dutta-Horn relation. Certain features of the temperature dependence of the noise magnitude do not follow an activated behavior pointing to a complex origin of the fluctuations in a CDW system.

Related

• The Noise of the Charge Density Waves in NbSe₃ Nanowires -- Contributions of Electrons and Quantum Condensate
• A Quieter State of Charge -- Ultra-Low-Noise Collective Current in Charge-Density-Wave Nanowires
• Broad band noise and stochastic resonance in the CDW conductors K0.30MoO3 and K0.30Mo(1-x)WxO3 (x=0.001 and x=0.002)
• An artificial charge-density-wave conductor realized by double quantum wells
• Low-Frequency Noise in Quasi-1D (TaSe₄)₂I Weyl Semimetal Nanoribbons