@article{oai:kumadai.repo.nii.ac.jp:00026722,
 author = {横井, 裕之 and 南, 信次 and 嶽山, 正二郎 and Yokoi, Hiroyuki and Effendi, Mukhtar and Minami, Nobutsugu and Takeyama, Shojiro},
 issue = {1},
 journal = {Journal of Physics : Conference Series},
 month = {},
 note = {application/pdf, 論文(Article), Singlet excitonic states at the first subband-edge in single-walled carbon nanotubes
(SWCNTs) have been studied through near-infrared magneto-absorption spectroscopy under
magnetic fields to 105.9 T. Well-resolved absorption spectra of stretch-aligned
SWCNT(CoMoCAT)-gelatin films were obtained above 100 T. By the application of magnetic
fields in parallel to the alignment of SWCNTs, peak shift toward the lower energy was
observed for (8, 4) and (7, 6) tubes and the opposite behavior was observed for (7, 5) and (6, 5)
tubes. Above 28.8 T, new peaks emerged at the higher energy side of the peak for the (8, 4)
and (7, 6) tubes, and at the lower energy side of the peaks for the (7, 5) and (6, 5) tubes. The
magnetic splitting between the existing peak and the new peak was symmetric for every tube,
which is in line with the energy splitting due to the Aharonov-Bohm effect. Judging from the
energetic positions where the new peaks emerged, the singlet dark excitonic state locates at the
lower energy than the singlet bright one in the (7, 5) and (6, 5) tubes while it is suggested
strongly that the bright one locates at the lower energy in the (8, 4) and (7, 6) tubes., http://iopscience.iop.org/1742-6596/334/1/012052},
 pages = {012052-1--012052-5},
 title = {Near-infrared magneto-optical study of excitonic states in single-walled carbon nanotubes under ultra-high magnetic fields},
 volume = {334},
 year = {2011}
}