Nie, X. A., Li, S., Yang, M., Zhu, Z., Xu, H. K., Yang, X., Zheng, F., Guan, D., Wang, S., Li, Y. Y., Liu, C., Li, J., Zhang, P., Shi, Y., Zheng, H., & Jia, J. (2020). Robust Hot Electron and Multiple Topological Insulator States in PtBi2 ACS Nano, 14(2), 2366-2372. https://doi.org/10.1021/acsnano.9b09564
Nie, Xiao Ang ; Li, Shujing ; Yang, Meng et al. / Robust Hot Electron and Multiple Topological Insulator States in PtBi2 In: ACS Nano. 2020 ; Vol. 14, No. 2. pp. 2366-2372.
@article{ae7b98951e1443f7a88dbfbba02ba7e7,
title = "Robust Hot Electron and Multiple Topological Insulator States in PtBi2 ",
abstract = "A two-dimensional topological insulator features (only) one bulk gap with nontrivial topology, which protects one-dimensional boundary states at the Fermi level. We find a quantum phase of matter beyond this category: a multiple topological insulator. It possesses a ladder of topological gaps; each gap protects a robust edge state. We prove a monolayer of van der Waals material PtBi2 as a two-dimensional multiple topological insulator. By means of scanning tunneling spectroscopy, we directly visualize the one-dimensional hot electron (and hole) channels with nanometer size on the samples. Furthermore, we confirm the topological protection of these channels by directly demonstrating their robustness to variations of crystal orientation, edge geometry, and sample temperature. The discovered topological hot electron materials may be applied as efficient photocatalysts in the future.",
keywords = "2D materials, edge state, hot electron, scanning tunneling microscopy, topological insulator",
author = "Nie, {Xiao Ang} and Shujing Li and Meng Yang and Zhen Zhu and Xu, {Hao Ke} and Xu Yang and Fawei Zheng and Dandan Guan and Shiyong Wang and Li, {Yao Yi} and Canhua Liu and Jian Li and Ping Zhang and Youguo Shi and Hao Zheng and Jinfeng Jia",
note = "Publisher Copyright: {\textcopyright} 2020 American Chemical Society.",
year = "2020",
month = feb,
day = "25",
doi = "10.1021/acsnano.9b09564",
language = "English",
volume = "14",
pages = "2366--2372",
journal = "ACS Nano",
issn = "1936-0851",
publisher = "American Chemical Society",
number = "2",
}
Nie, XA, Li, S, Yang, M, Zhu, Z, Xu, HK, Yang, X, Zheng, F, Guan, D, Wang, S, Li, YY, Liu, C, Li, J, Zhang, P, Shi, Y, Zheng, H & Jia, J 2020, 'Robust Hot Electron and Multiple Topological Insulator States in PtBi2 ', ACS Nano, vol. 14, no. 2, pp. 2366-2372. https://doi.org/10.1021/acsnano.9b09564
Robust Hot Electron and Multiple Topological Insulator States in PtBi2 . / Nie, Xiao Ang; Li, Shujing; Yang, Meng et al.
In:
ACS Nano, Vol. 14, No. 2, 25.02.2020, p. 2366-2372.
Research output: Contribution to journal › Article › peer-review
TY - JOUR
T1 - Robust Hot Electron and Multiple Topological Insulator States in PtBi2
AU - Nie, Xiao Ang
AU - Li, Shujing
AU - Yang, Meng
AU - Zhu, Zhen
AU - Xu, Hao Ke
AU - Yang, Xu
AU - Zheng, Fawei
AU - Guan, Dandan
AU - Wang, Shiyong
AU - Li, Yao Yi
AU - Liu, Canhua
AU - Li, Jian
AU - Zhang, Ping
AU - Shi, Youguo
AU - Zheng, Hao
AU - Jia, Jinfeng
N1 - Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/2/25
Y1 - 2020/2/25
N2 - A two-dimensional topological insulator features (only) one bulk gap with nontrivial topology, which protects one-dimensional boundary states at the Fermi level. We find a quantum phase of matter beyond this category: a multiple topological insulator. It possesses a ladder of topological gaps; each gap protects a robust edge state. We prove a monolayer of van der Waals material PtBi2 as a two-dimensional multiple topological insulator. By means of scanning tunneling spectroscopy, we directly visualize the one-dimensional hot electron (and hole) channels with nanometer size on the samples. Furthermore, we confirm the topological protection of these channels by directly demonstrating their robustness to variations of crystal orientation, edge geometry, and sample temperature. The discovered topological hot electron materials may be applied as efficient photocatalysts in the future.
AB - A two-dimensional topological insulator features (only) one bulk gap with nontrivial topology, which protects one-dimensional boundary states at the Fermi level. We find a quantum phase of matter beyond this category: a multiple topological insulator. It possesses a ladder of topological gaps; each gap protects a robust edge state. We prove a monolayer of van der Waals material PtBi2 as a two-dimensional multiple topological insulator. By means of scanning tunneling spectroscopy, we directly visualize the one-dimensional hot electron (and hole) channels with nanometer size on the samples. Furthermore, we confirm the topological protection of these channels by directly demonstrating their robustness to variations of crystal orientation, edge geometry, and sample temperature. The discovered topological hot electron materials may be applied as efficient photocatalysts in the future.
KW - 2D materials
KW - edge state
KW - hot electron
KW - scanning tunneling microscopy
KW - topological insulator
UR - http://www.scopus.com/inward/record.url?scp=85081177666&partnerID=8YFLogxK
U2 - 10.1021/acsnano.9b09564
DO - 10.1021/acsnano.9b09564
M3 - Article
AN - SCOPUS:85081177666
SN - 1936-0851
VL - 14
SP - 2366
EP - 2372
JO - ACS Nano
JF - ACS Nano
IS - 2
ER -
Nie XA, Li S, Yang M, Zhu Z, Xu HK, Yang X et al. Robust Hot Electron and Multiple Topological Insulator States in PtBi2 ACS Nano. 2020 Feb 25;14(2):2366-2372. doi: 10.1021/acsnano.9b09564
