Author
Listed:
- Yiwen Zhang
(ShanghaiTech University
ShanghaiTech University)
- Bo Xie
(ShanghaiTech University
ShanghaiTech University)
- Yue Yang
(ShanghaiTech University)
- Yueshen Wu
(ShanghaiTech University
ShanghaiTech University)
- Xin Lu
(ShanghaiTech University)
- Yuxiong Hu
(ShanghaiTech University)
- Yifan Ding
(ShanghaiTech University
ShanghaiTech University)
- Jiadian He
(ShanghaiTech University
ShanghaiTech University)
- Peng Dong
(ShanghaiTech University
ShanghaiTech University)
- Jinghui Wang
(ShanghaiTech University
ShanghaiTech University)
- Xiang Zhou
(ShanghaiTech University
ShanghaiTech University)
- Jianpeng Liu
(ShanghaiTech University
ShanghaiTech University
Liaoning Academy of Materials)
- Zhu-Jun Wang
(ShanghaiTech University)
- Jun Li
(ShanghaiTech University
ShanghaiTech University)
Abstract
Extremely large magnetoresistance (XMR) is highly applicable in spintronic devices such as magnetic sensors, magnetic memory, and hard drives. Typically, XMR is found in Weyl semimetals characterized by perfect electron–hole symmetry or exceptionally high electric conductivity and mobility. Our study explores this phenomenon in a recently developed graphene moiré system, which demonstrates XMR owing to its topological structure and high-quality crystal formation. We investigate the electronic properties of three-dimensional intertwined twisted graphene spirals (TGS), manipulating the screw dislocation axis to achieve a rotation angle of 7.3°. Notably, at 14 T and 2 K, the magnetoresistance of these structures reaches 1.7 × 107%, accompanied by a metal–insulator transition as the temperature increases. This transition becomes noticeable when the magnetic field exceeds a minimal threshold of approximately 0.1 T. These observations suggest the possible existence of complex, correlated states within the partially filled three-dimensional Landau levels of the 3D TGS system. Our findings open up possibilities for achieving XMR by engineering the topological structure of 2D layered moiré systems.
Suggested Citation
Yiwen Zhang & Bo Xie & Yue Yang & Yueshen Wu & Xin Lu & Yuxiong Hu & Yifan Ding & Jiadian He & Peng Dong & Jinghui Wang & Xiang Zhou & Jianpeng Liu & Zhu-Jun Wang & Jun Li, 2024.
"Extremely large magnetoresistance in twisted intertwined graphene spirals,"
Nature Communications, Nature, vol. 15(1), pages 1-9, December.
Handle:
RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50456-0
DOI: 10.1038/s41467-024-50456-0
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