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PhysRevB.80.115436.pdf | 338.1 kB | Adobe PDF | 見る/開く |
タイトル: | Symmetry-induced nonequilibrium distributions of bright and dark exciton states in single carbon nanotubes |
著者: | Matsunaga, Ryusuke Miyauchi, Yuhei https://orcid.org/0000-0002-0945-0265 (unconfirmed) Matsuda, Kazunari Kanemitsu, Yoshihiko https://orcid.org/0000-0002-0788-131X (unconfirmed) |
著者名の別形: | 金光, 義彦 |
キーワード: | Aharonov-Bohm effect carbon nanotubes excitons phonons |
発行日: | Sep-2009 |
出版者: | American Institute of Physics |
誌名: | Physical Review B |
巻: | 80 |
号: | 11 |
論文番号: | 115436 |
抄録: | We investigated the magnetic and temperature dependence of the bright and dark exciton luminescence spectra in single carbon nanotubes. We found that the phonon-induced exciton scattering rate from the bright to the dark state is only one order of magnitude larger than the dark exciton recombination rate below 10 K at zero magnetic field. Our results indicate that excitons are nonequilibriumly distributed between the bright and dark states due to the different parities of the wave functions and that Aharonov-Bohm flux enhances the phonon-induced exciton scattering between these two states. Our nonequilibrium exciton distribution model can also explain the nonzero photoluminescence intensity at very low temperatures. |
著作権等: | c 2009 The American Physical Society |
URI: | http://hdl.handle.net/2433/87338 |
DOI(出版社版): | 10.1103/PhysRevB.80.115436 |
出現コレクション: | 学術雑誌掲載論文等 |
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