Two-dimensional ferroelectricity in a single-element bismuth monolayer
National University of Singapore · Kunming University of Science and Technology · +7 more institutions
Abstract
Abstract Ferroelectric materials are fascinating for their non-volatile switchable electric polarizations induced by the spontaneous inversion-symmetry breaking. However, in all of the conventional ferroelectric compounds, at least two constituent ions are required to support the polarization switching 1,2 . Here, we report the observation of a single-element ferroelectric state in a black phosphorus-like bismuth layer 3 , in which the ordered charge transfer and the regular atom distortion between sublattices happen simultaneously. Instead of a homogenous orbital configuration that ordinarily occurs in elementary substances, we found the Bi atoms in a black phosphorous-like Bi monolayer maintain a weak and…
Citation impact
- FWCI
- 20.15
- Percentile
- 100%
- References
- 58
Authors
10- JGJian GouCorresponding
National University of Singapore
- HBHua Bai
Kunming University of Science and Technology, State Key Laboratory of Silicon Materials, Zhejiang University of Technology
- XZXuanlin Zhang
State Key Laboratory of Silicon Materials, Zhejiang University of Technology
- YHYu Huang
Tianjin University, National University of Singapore
- SDSisheng Duan
National University of Singapore
Topics & keywords
- Bismuth
- Ferroelectricity
- Monolayer
- Materials science
- Element (criminal law)
- Condensed matter physics
- Nanotechnology
- Physics
Funding
- NRNational Research Foundation
- NRNational Research Foundation SingaporeAward: R-144-000-405-281
- NNNational Natural Science Foundation of ChinaAwards: 11974307, R-144-000-405-281, 12134019, 12004278, LDT23F04014F01, XDB30000000, 2018YFE0202700
- CAChinese Academy of SciencesAwards: XDB30000000, YSBR-054
- NSNatural Science Foundation of Zhejiang ProvinceAwards: LDT23F04014F01, LR21A040001