Evidence for Dark Excitons in a Single Carbon Nanotube due to the Aharonov-Bohm Effect
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- R. Matsunaga
- Institute for Chemical Research, Kyoto University
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- K. Matsuda
- Institute for Chemical Research, Kyoto University
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- Y. Kanemitsu
- Institute for Chemical Research, Kyoto University Photonics and Electronics Science and Engineering Center, Kyoto University
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説明
We studied exciton structures and the Aharonov-Bohm effect in a single carbon nanotube using micro-photoluminescence (PL) spectroscopy under a magnetic field at low temperatures. A single sharp PL peak from the bright exciton state of a single carbon nanotube was observed under zero magnetic field, and the additional PL of dark exciton state appeared below the bright exciton peak under high magnetic fields. It was found that the split between the bright and dark exciton states is several millielectron volts at zero field. The tube diameter dependence of the splitting arises from the intervalley short-range Coulomb interaction.
収録刊行物
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- Topologica
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Topologica 2 (1), 015-, 2009
21世紀COEプログラム「トポロジー理工学の創成」
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詳細情報 詳細情報について
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- CRID
- 1390282680251713024
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- NII論文ID
- 130004488776
- 120001682376
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- ISSN
- 00319007
- 18816886
- 10797114
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- HANDLE
- 2433/87345
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- PubMed
- 18851574
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- JaLC
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