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In-Plane Transport and Enhanced Thermoelectric Performance in Thin Films of the Topological InsulatorsBi2Te3andBi2Se3
Open accessAbstract
Several small-band-gap semiconductors are now known to protect metallic surface states as a consequence of the topology of the bulk electron wave functions. The known "topological insulators" with this behavior include the important thermoelectric materials Bi₂Te₃ and Bi₂Se₃, whose surfaces are observed in photoemission experiments to have an unusual electronic structure with a single Dirac cone. We study in-plane (i.e., horizontal) transport in thin films made of these materials. The surface states from top and bottom surfaces hybridize, and conventional diffusive transport predicts that the tunable hybridization-induced band gap leads to increased thermoelectric performance at low temperatures. Beyond simple diffusive transport, the conductivity shows a crossover from the spin-orbit-induced antilocalization at a single surface to ordinary localization.
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Citations
Cites
Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the surface
Zhang, H., Liu, C.-X., Qi, X.-L., Dai, X., Fang, Z., & Zhang, S.-C. (2009) · Nature Physics · doi:10.1038/nphys1270 · Cited by 6,359
Topological Insulators in Three Dimensions
Fu, L., Kane, C. L., & Mele, E. J. (2007) · Physical Review Letters · doi:10.1103/physrevlett.98.106803 · Cited by 4,651
Observation of a large-gap topological-insulator class with a single Dirac cone on the surface
Xia, Y., Qian, D., Hsieh, D., Wray, L., Pal, A., Lin, H., Bansil, A., Grauer, D., Hor, Y. S., Cava, R. J., et al. (2009) · Nature Physics · doi:10.1038/nphys1274 · Cited by 3,765
Experimental Realization of a Three-Dimensional Topological Insulator, Bi 2 Te 3
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., et al. (2009) · Science · doi:10.1126/science.1173034 · Cited by 3,585
A topological Dirac insulator in a quantum spin Hall phase
Hsieh, D., Qian, D., Wray, L., Xia, Y., Hor, Y. S., Cava, R. J., & Hasan, M. Z. (2008) · Nature · doi:10.1038/nature06843 · Cited by 3,523
Balandin, A., & Wang, K. L. (1998) · Physical Review B · doi:10.1103/physrevb.58.1544 · Cited by 647
Massive Dirac fermions and spin physics in an ultrathin film of topological insulator
Lu, H.-Z., Shan, W.-Y., Yao, W., Niu, Q., & Shen, S.-Q. (2010) · Physical Review B · doi:10.1103/physrevb.81.115407 · Cited by 607
Cited by
Progress, Challenges, and Opportunities in Two-Dimensional Materials Beyond Graphene
Butler, S. Z., Hollen, S. M., Cao, L., Cui, Y., Gupta, J. A., Gutiérrez, H. R., Heinz, T. F., Hong, S. S., Huang, J., Ismach, A. F., et al. (2013) · ACS Nano · doi:10.1021/nn400280c · Cited by 4,878
Metadata
- Authors
- Ghaemi, P., Mong, R. S. K., & Moore, J. E.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2010-10-11
- Volume
- 105
- Issue
- 16
- Pages
- 166603-166603
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1964450226
- Cited by
- 258
- References
- 7
- FWCI
- 10.17
- Type
- journal article
- Language
- en
- Open access
- green
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- Ghaemi, P., Mong, R. S. K., & Moore, J. E. (2010). In-Plane Transport and Enhanced Thermoelectric Performance in Thin Films of the Topological InsulatorsBi2Te3andBi2Se3. Physical Review Letters. https://doi.org/10.1103/physrevlett.105.166603
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