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Band Structure Asymmetry of Bilayer Graphene Revealed by Infrared Spectroscopy
Open accessAbstract
We report on infrared spectroscopy of bilayer graphene integrated in gated structures. We observe a significant asymmetry in the optical conductivity upon electrostatic doping of electrons and holes. We show that this finding arises from a marked asymmetry between the valence and conduction bands, which is mainly due to the inequivalence of the two sublattices within the graphene layer and the next-nearest-neighbor interlayer coupling. From the conductivity data, the energy difference of the two sublattices and the interlayer coupling energy are directly determined.
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Cites
Two-dimensional gas of massless Dirac fermions in graphene
Novoselov, K. S., Geim, A. K., Morozov, S. V., Jiang, D., Katsnelson, M. I., Grigorieva, I. V., Dubonos, S. V., & Firsov, A. A. (2005) · Nature · doi:10.1038/nature04233 · Cited by 21,611
Experimental observation of the quantum Hall effect and Berry's phase in graphene
Zhang, Y., Tan, Y.-W., Stormer, H. L., & Kim, P. (2005) · Nature · doi:10.1038/nature04235 · Cited by 13,435
Self-citationFine Structure Constant Defines Visual Transparency of Graphene
Nair, R. R., Blake, P., Grigorenko, A. N., Novoselov, K. S., Booth, T. J., Stauber, T., Peres, N. M. R., & Geim, A. K. (2008) · Science · doi:10.1126/science.1156965 · Cited by 9,084
Landau-Level Degeneracy and Quantum Hall Effect in a Graphite Bilayer
McCann, E., & Fal’ko, V. I. (2006) · Physical Review Letters · doi:10.1103/physrevlett.96.086805 · Cited by 2,060
Biased Bilayer Graphene: Semiconductor with a Gap Tunable by the Electric Field Effect
Castro, E. V., Novoselov, K. S., Morozov, S. V., Peres, N. M. R., dos Santos, J. M. B. L., Nilsson, J., Guinea, F., Geim, A. K., & Neto, A. H. C. (2007) · Physical Review Letters · doi:10.1103/physrevlett.99.216802 · Cited by 2,033
Asymmetry gap in the electronic band structure of bilayer graphene
McCann, E. (2006) · Physical Review B · doi:10.1103/physrevb.74.161403 · Cited by 1,275
Cited by
Structure of graphene and its disorders: a review
Yang, G., Li, L., Lee, W. B., & Ng, M. C. (2018) · Science and Technology of Advanced Materials · doi:10.1080/14686996.2018.1494493 · Cited by 759
Observation of an Electric-Field-Induced Band Gap in Bilayer Graphene by Infrared Spectroscopy
Mak, K. F., Lui, C. H., Shan, J., & Heinz, T. F. (2009) · Physical Review Letters · doi:10.1103/physrevlett.102.256405 · Cited by 638
Correlated states in twisted double bilayer graphene
Shen, C., Chu, Y., Wu, Q., Li, N., Wang, S., Zhao, Y., Tang, J., Liu, J., Tian, J., Watanabe, K., et al. (2020) · Nature Physics · doi:10.1038/s41567-020-0825-9 · Cited by 531
Optical absorption in twisted bilayer graphene
Moon, P., & Koshino, M. (2013) · Physical Review B · doi:10.1103/physrevb.87.205404 · Cited by 493
Kuzmenko, A. B., Crassee, I., van der Marel, D., Blake, P., & Novoselov, K. S. (2009) · Physical Review B · doi:10.1103/physrevb.80.165406 · Cited by 326
Metadata
- Authors
- Li, Z. Q., Henriksen, E. A., Jiang, Z., Hao, Z., Martin, M. C., Kim, P., Stormer, H. L., & Basov, D. N.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2009-01-23
- Volume
- 102
- Issue
- 3
- Pages
- 037403-037403
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1538172081
- Cited by
- 262
- References
- 6
- FWCI
- 19.30
- Type
- journal article
- Language
- en
- Open access
- green
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- Li, Z. Q., Henriksen, E. A., Jiang, Z., Hao, Z., Martin, M. C., Kim, P., Stormer, H. L., & Basov, D. N. (2009). Band Structure Asymmetry of Bilayer Graphene Revealed by Infrared Spectroscopy. Physical Review Letters. https://doi.org/10.1103/physrevlett.102.037403
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