Low-Frequency Current Fluctuations and Sliding of the Charge Density Waves in Two-Dimensional Materials

Nano Letters
Guanxiong LiuA A Balandin

Abstract

We investigated low-frequency noise in two-dimensional (2D) charge density wave (CDW) systems, 1 T-TaS2 thin films, as they were driven from the nearly commensurate (NC) to incommensurate (IC) CDW phases by voltage and temperature stimuli. This study revealed that noise in 1 T-TaS2 has two pronounced maxima at the bias voltages, which correspond to the onset of CDW sliding and the NC-to-IC phase transition. We observed unusual Lorentzian features and exceptionally strong noise dependence on electric bias and temperature, leading to the conclusion that electronic noise in 2D CDW systems has a unique physical origin different from known fundamental noise types. We argue that noise spectroscopy can serve as a useful tool for understanding electronic transport phenomena in 2D CDW materials characterized by coexistence of different phases and strong pinning.

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Citations

Apr 4, 2020·Advanced Materials·Gyoung Hwa JeongSang Ouk Kim
Jul 7, 2021·ACS Nano·Carla Boix-ConstantEugenio Coronado
Sep 19, 2019·ACS Applied Materials & Interfaces·Tsung-Han TsaiPo-Wen Chiu
Feb 26, 2019·ACS Applied Materials & Interfaces·Xingyuan MaShuwei Li
Jul 24, 2020·The Journal of Physical Chemistry Letters·Arnab Kabiraj, Santanu Mahapatra
Aug 14, 2020·Nano Letters·Chunhe DangLiming Xie
Oct 10, 2018·ACS Nano·Chao ZhuZheng Liu
Sep 24, 2021·ACS Applied Materials & Interfaces·Saba BaraghaniAlexander A Balandin

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