Evolution and breakdown of chiral anomaly in Weyl semiconductor tellurium
Abstract
Chiral anomaly in topological materials manifests as negative longitudinal magnetoresistance, yet the tunability and evolution of this effect remain elusive. Here we show that doped tellurium serves as a versatile platform to realize a giant negative longitudinal magnetoresistance that is highly tunable via the Fermi level and magnetic field. By moving the Fermi level towards the Weyl point, we observe a pronounced enhancement of negative magnetoresistance, which arises from chiral anomaly and robustly persists up to ambient temperature. Beyond the quantum limit, the system exhibits positive linear magnetoconductance, serving as a compelling transport signature of the chiral anomaly in the lowest Landau level. Notably, in the extreme quantum limit at cryogenic temperatures, the magnetoresistance undergoes a dramatic reversal from negative to positive. This reversal points to a potential field-induced phase transition into a collective electronic state driven by enhanced electron-electron interactions. Our findings provide valuable insights into the unconventional chiral transport and emergent correlated quantum states under extreme magnetic fields.
Versions
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BibTeX
@misc{xue2026evolution,
title = {{Evolution and breakdown of chiral anomaly in Weyl semiconductor tellurium}},
author = {Zhifeng Xue and Jiaji Zhao and Yi Ji and Fuyang Chen and Nannan Tang and Gangjian Jin and Bing Shen and Bin Wang and Yang Wang and Mingxi Chi and Jin-Zhu Zhao and Ruiqiang Wang and Qizhong Zhu and He Wang and Huakun Zuo and Donghui Guo and Dingyong Zhong and Mingxun Deng and Huichao Wang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.13084},
eprint = {2610.13084},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.13084},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Evolution and breakdown of chiral anomaly in Weyl semiconductor tellurium
AU - Zhifeng Xue
AU - Jiaji Zhao
AU - Yi Ji
AU - Fuyang Chen
AU - Nannan Tang
AU - Gangjian Jin
AU - Bing Shen
AU - Bin Wang
AU - Yang Wang
AU - Mingxi Chi
AU - Jin-Zhu Zhao
AU - Ruiqiang Wang
AU - Qizhong Zhu
AU - He Wang
AU - Huakun Zuo
AU - Donghui Guo
AU - Dingyong Zhong
AU - Mingxun Deng
AU - Huichao Wang
PY - 2026
DA - 2026/10/16
PB - arXiv
DO - 10.48550/arxiv.2610.13084
UR - https://arxiv.org/abs/2610.13084
AB - Chiral anomaly in topological materials manifests as negative longitudinal magnetoresistance, yet the tunability and evolution of this effect remain elusive. Here we show that doped tellurium serves as a versatile platform to realize a giant negative longitudinal magnetoresistance that is highly tunable via the Fermi level and magnetic field. By moving the Fermi level towards the Weyl point, we observe a pronounced enhancement of negative magnetoresistance, which arises from chiral anomaly and robustly persists up to ambient temperature. Beyond the quantum limit, the system exhibits positive linear magnetoconductance, serving as a compelling transport signature of the chiral anomaly in the lowest Landau level. Notably, in the extreme quantum limit at cryogenic temperatures, the magnetoresistance undergoes a dramatic reversal from negative to positive. This reversal points to a potential field-induced phase transition into a collective electronic state driven by enhanced electron-electron interactions. Our findings provide valuable insights into the unconventional chiral transport and emergent correlated quantum states under extreme magnetic fields.
ER -