Strong Charge-Transfer Excitonic Effects and the Bose-Einstein Exciton 
Condensate in Graphane

Cudazzo, Pierluigi; Attaccalite, Claudio; Tokatly, Ilya V.; Rubio, Angel

doi:10.1103/PhysRevLett.104.226804

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Strong Charge-Transfer Excitonic Effects and the Bose-Einstein Exciton Condensate in Graphane

MPS-Authors

/persons/resource/persons22028

Rubio, Angel
Theory, Fritz Haber Institute, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Cudazzo, P., Attaccalite, C., Tokatly, I. V., & Rubio, A. (2010). Strong Charge-Transfer Excitonic Effects and the Bose-Einstein Exciton Condensate in Graphane. Physical review letters, 104: 226804. doi:10.1103/PhysRevLett.104.226804.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-2A2C-2

Abstract

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.