マエダ　トシテル   Toshiteru Maeda   前田　敏輝    所属   石巻専修大学  理工学部    職種   教授
言語種別	英語
発行・発表の年月	1998/03
形態種別	研究論文（学術雑誌）
標題	Resonant Raman scattering and the zone-folded electronic structure in single-wall nanotubes
執筆形態	共著
掲載誌名	Physical Review B
巻・号・頁	57(9),pp.4999
総ページ数	3
概要	Resonant Raman scattering from optical phonons in single-wall nanotubes of mean diameter 1.1 nm has been measured for incident laser beams with wavelength between 450 and 800 nm. The scattering intensities exhibit anomalies in the vicinity of 690 nm, there being a minimum in the longitudinal components and a maximum in the transverse. Our optical-transmission measurement also exhibits a dip in the same photon energy range. The anomalies are caused by the incident laser beam resonant with the zone-folded electronic structures in nanotubes. These results provide direct experimental evidence of the critical point in the density of states produced by the cylindrical symmetry of nanotubes.
DOI	10.1103/PhysRevB.57.4999