DOI: 10.1126/science.1173034. Experimental Realization of a Three-Dimensional Topological Insulator, Bi <sub>2</sub> Te <sub>3</sub>

Experimental Realization of a Three-Dimensional Topological Insulator, Bi 2 Te 3

10.1126/science.1173034

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Topological Insulators Topological insulators are a recently discovered state of matter, in which the bulk is an insulator while the surface is metallic with counterpropagating spin states. The surface states are protected by the topology, or structure, of the Fermi surface in the bulk gap and are described by a Dirac cone showing linear dispersion behavior meeting at the Dirac point. Chen et al. (p. 178 , published online 11 June) provide a comprehensive photoemission study on Bi 2 Te 3 showing that it too falls into the category of topological band insulators. Moreover, there is just a single surface state with a single Dirac point in the photoemission spectrum. The identification of a material with a single Dirac point removes the ambiguity arising from multiple surface states and provides an ideal test-bed to probe the physics of these exotic new materials.

Bibliography

Chen, Y. L., Analytis, J. G., Chu, J.-H., Liu, Z. K., Mo, S.-K., Qi, X. L., Zhang, H. J., Lu, D. H., Dai, X., Fang, Z., Zhang, S. C., Fisher, I. R., Hussain, Z., & Shen, Z.-X. (2009). Experimental Realization of a Three-Dimensional Topological Insulator, Bi 2 Te 3. Science, 325(5937), 178â181.

Authors 14

Y. L. Chen (first)
J. G. Analytis (additional)
J.-H. Chu (additional)
Z. K. Liu (additional)
S.-K. Mo (additional)
X. L. Qi (additional)
H. J. Zhang (additional)
D. H. Lu (additional)
X. Dai (additional)
Z. Fang (additional)
S. C. Zhang (additional)
I. R. Fisher (additional)
Z. Hussain (additional)
Z.-X. Shen (additional)

References 25 Referenced 3,274

10.1126/science.1133734
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10.1103/PhysRevB.78.195424
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A. R. Akhmerov J. Nilsson C. W. J. Beenakker Phys. Rev. Lett. 102 216404 (2009). (10.1103/PhysRevLett.102.216404)
L. Fu C. L. Kane Phys. Rev. Lett. 102 216403 (2009). (10.1103/PhysRevLett.102.216403)
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H. Zhang et al. Nat. Phys . 5 438 (2009).
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Dates

Type	When
Created	16 years, 2 months ago (June 11, 2009, 10:32 p.m.)
Deposited	1 year, 7 months ago (Jan. 10, 2024, 4:46 a.m.)
Indexed	2 days, 1 hour ago (Aug. 20, 2025, 8:51 a.m.)
Issued	16 years, 1 month ago (July 10, 2009)
Published	16 years, 1 month ago (July 10, 2009)
Published Print	16 years, 1 month ago (July 10, 2009)

Funders 0

None

BibTeX

@article{Chen_2009, title={Experimental Realization of a Three-Dimensional Topological Insulator, Bi 2 Te 3}, volume={325}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1173034}, DOI={10.1126/science.1173034}, number={5937}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Chen, Y. L. and Analytis, J. G. and Chu, J.-H. and Liu, Z. K. and Mo, S.-K. and Qi, X. L. and Zhang, H. J. and Lu, D. H. and Dai, X. and Fang, Z. and Zhang, S. C. and Fisher, I. R. and Hussain, Z. and Shen, Z.-X.}, year={2009}, month=jul, pages={178–181} }

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