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Excitons and many-electron effects in the optical response of single-walled boron nitride nanotubes

Cited 121 time in Web of Science Cited 123 time in Scopus
Authors

Park, Cheol-Hwan; Spataru, Catalin D.; Louie, Steven G.

Issue Date
2006-03
Publisher
American Physical Society
Citation
Physical Review Letters, Vol.96 No.12, p. 126105
Abstract
We report first-principles calculations of the effects of quasiparticle self-energy and electron-hole interaction on the optical properties of single-walled boron nitride nanotubes. Excitonic effects are shown to be even more important in BN nanotubes than in carbon nanotubes. Electron-hole interactions give rise to complexes of bright (and dark) excitons, which qualitatively alter the optical response. Excitons with a binding energy larger than 2eV are found in the (8,0) BN nanotubes. Moreover, unlike the carbon nanotubes, theory predicts that these exciton states are comprised of coherent supposition of transitions from several different subband pairs, giving rise to novel behaviors. © 2006 The American Physical Society.
ISSN
0031-9007
URI
https://hdl.handle.net/10371/202482
DOI
https://doi.org/10.1103/PhysRevLett.96.126105
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  • College of Natural Sciences
  • Department of Physics and Astronomy
Research Area Condensed Matter Physics, Nanoscale Photonics, Nanoscale Physics, 나노 물리와 나노 광자학, 응집 물질 물리

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