Inverse-current quantum electro-oscillations in a charge-density wave insulator
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)I and TaS 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.
Cite
@article{arxiv.2302.08677,
title = {Inverse-current quantum electro-oscillations in a charge-density wave insulator},
author = {Tian Le and Ruiyang Jiang and Linfeng Tu and Renji Bian and Yiwen Ma and Yunteng Shi and Ke Jia and Zhilin Li and Zhaozheng Lyu and Xuewei Cao and Jie Shen and Guangtong Liu and Youguo Shi and Fucai Liu and Yi Zhou and Li Lu and Fanming Qu},
journal= {arXiv preprint arXiv:2302.08677},
year = {2024}
}
Comments
33 pages, 17 figures