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arXiv · 2302.08677

Inverse-current quantum electro-oscillations in a charge-density wave insulator

Tian Le·Ruiyang Jiang·Linfeng Tu·Renji Bian·Yiwen Ma·Yunteng Shi·Ke Jia·Zhilin Li·Zhaozheng Lyu·Xuewei Cao·Jie Shen·Guangtong Liu·Youguo Shi·Fucai Liu·Yi Zhou·Li Lu·Fanming Qu
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Abstract

Quantum magneto-oscillations have long been a vital subject in condensed matter physics, with ubiquitous quantum phenomena and diverse underlying physical mechanisms. Here, we demonstrate the intrinsic and reproducible DC-current-driven quantum electro-oscillations with a periodicity in the inverse of the current (1/I), in quasi-one-dimensional charge-density-wave (CDW) insulators (TaSe$_4$)$_2$I and TaS$_3$ nanowires. Such oscillations manifest in the nearly infinite Fr\"ohlich conductivity region where the undamped CDW flow forms in a finite electric current, and finally disappear after the oscillation index n reaches 1. A systematic investigation on the effect of temperature and magnetic field establishes that the observed electro-oscillations are a coherent quantum phenomenon. We discuss the possibilities of the physical mechanisms, including the formation of sliding-driven inherent Floquet sidebands. Our results introduce a new member in the family of quantum oscillations, and shed light on plausible avenues to explore novel physics and potential applications of coherent density-wave condensates.

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Tian Le, Ruiyang Jiang, Linfeng Tu, Renji Bian, Yiwen Ma, Yunteng Shi, Ke Jia, Zhilin Li, Zhaozheng Lyu, Xuewei Cao, Jie Shen, Guangtong Liu, Youguo Shi, Fucai Liu, Yi Zhou, Li Lu, Fanming Qu. 2023-02-17. Inverse-current quantum electro-oscillations in a charge-density wave insulator. https://doi.org/10.1103/physrevb.109.245123

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