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Strong Charge-Transfer Excitonic Effects and the Bose-Einstein Exciton Condensate in Graphane
Open accessAbstract
Using first principles many-body theory methods (GW+Bethe-Salpeter equation) we demonstrate that the optical properties of graphane are dominated by localized charge-transfer excitations governed by enhanced electron correlations in a two-dimensional dielectric medium. Strong electron-hole interaction leads to the appearance of small radius bound excitons with spatially separated electron and hole, which are localized out of plane and in plane, respectively. The presence of such bound excitons opens the path towards an excitonic Bose-Einstein condensate in graphane that can be observed experimentally.
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Citations
Cites
Electronic excitations: density-functional versus many-body Green’s-function approaches
Onida, G., Reining, L., & Rubio, A. (2002) · Reviews of Modern Physics · doi:10.1103/revmodphys.74.601 · Cited by 4,155
Cited by
Cudazzo, P., Tokatly, I. V., & Rubio, A. (2011) · Physical Review B · doi:10.1103/physrevb.84.085406 · Cited by 687
Self-citationTwo‐Dimensional Fluorinated Graphene: Synthesis, Structures, Properties and Applications
Feng, W., Long, P., Feng, Y., & Li, Y. (2016) · Advanced Science · doi:10.1002/advs.201500413 · Cited by 640
Luo, G., Qian, X., Liu, H., Qin, R., Zhou, J., Li, L., Gao, Z., Wang, E., Mei, W.-N., Lu, J., et al. (2011) · Physical Review B · doi:10.1103/physrevb.84.075439 · Cited by 373
Linear Scaling of the Exciton Binding Energy versus the Band Gap of Two-Dimensional Materials
Choi, J.-H., Cui, P., Lan, H., & Zhang, Z. (2015) · Physical Review Letters · doi:10.1103/physrevlett.115.066403 · Cited by 258
Metadata
- Authors
- Cudazzo, P., Attaccalite, C., Tokatly, I. V., & Rubio, A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2010-06-01
- Volume
- 104
- Issue
- 22
- Pages
- 226804-226804
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2095608461
- Cited by
- 217
- References
- 1
- FWCI
- 5.10
- Type
- journal article
- Language
- en
- Open access
- green
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