The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.
One-dimensional topological edge states of bismuth bilayers
Open accessAbstract
The hallmark of a topologically insulating state of matter in two dimensions protected by time-reversal symmetry is the existence of chiral edge modes propagating along the perimeter of the sample. Among the first systems predicted to be a two-dimensional topological insulator are bilayers of bismuth. Here we report scanning tunnelling microscopy experiments on bulk Bi crystals that show that a subset of the predicted Bi-bilayers’ edge states are decoupled from the states of the substrate and provide direct spectroscopic evidence of their one-dimensional nature. Moreover, by visualizing the quantum interference of edge-mode quasi-particles in confined geometries, we demonstrate their remarkable coherent propagation along the edge with scattering properties consistent with strong suppression of backscattering as predicted for the propagating topological edge states. The conducting surface states of 3D topological insulators are two-dimensional. In an analogous way, the edge states of 2D topological insulators are one-dimensional. Direct evidence of this one-dimensionality is now presented, by means of scanning tunnelling spectroscopy, for bismuth bilayers—one of the first theoretically predicted 2D topological insulators.
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Cites
Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
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Self-citationZ 2 Topological Order and the Quantum Spin Hall Effect
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Self-citationExperimental Realization of a Three-Dimensional Topological Insulator, Bi 2 Te 3
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Cited by
Mounet, N., Gibertini, M., Schwaller, P., Campi, D., Merkys, A., Marrazzo, A., Sohier, T., Castelli, I. E., Cepellotti, A., Pizzi, G., et al. (2018) · Nature Nanotechnology · doi:10.1038/s41565-017-0035-5 · Cited by 1,863
Colloquium : Topological band theory
Bansil, A., Lin, H., & Das, T. (2016) · Reviews of Modern Physics · doi:10.1103/revmodphys.88.021004 · Cited by 1,587
Observation of the quantum spin Hall effect up to 100 kelvin in a monolayer crystal
Wu, S., Fatemi, V., Gibson, Q. D., Watanabe, K., Taniguchi, T., Cava, R. J., & Jarillo-Herrero, P. (2018) · Science · doi:10.1126/science.aan6003 · Cited by 851
Self-citationQuantum spin Hall state in monolayer 1T'-WTe2
Tang, S., Zhang, C., Wong, D., Pedramrazi, Z., Tsai, H.-Z., Jia, C., Moritz, B., Claassen, M., Ryu, H., Kahn, S., et al. (2017) · Nature Physics · doi:10.1038/nphys4174 · Cited by 846
Higher-order topology in bismuth
Schindler, F., Wang, Z., Vergniory, M. G., Cook, A. M., Murani, A., Sengupta, S., Kasumov, A. Y., Deblock, R., Jeon, S., Drozdov, I., et al. (2018) · Nature Physics · doi:10.1038/s41567-018-0224-7 · Cited by 837
Self-citation
Metadata
- Authors
- Drozdov, I. K., Alexandradinata, A., Jeon, S., Nadj-Perge, S., Ji, H., Cava, R. J., Andrei Bernevig, B., & Yazdani, A.
- Venue
- Nature Physics
- Published
- 2014-08-10
- Volume
- 10
- Issue
- 9
- Pages
- 664-669
- ISSN
- 1745-2473 (ISSN-L)
- 1745-2481
- OpenAlex
- W1561234401
- Cited by
- 412
- References
- 16
- FWCI
- 16.14
- Type
- journal article
- Language
- en
- Open access
- green
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