We have carried out magneto-absorption and magneto-photoluminescence experiments on micelle-suspended single-walled carbon nanotubes in magnetic fields up to 45 T. Chirality-assigned spectral peaks exhibit significant changes with increasing magnetic field, which can be quantitatively explained in terms of the theoretically predicted splittings and redshifts of the band edge due to the Aharonov-Bohm effect combined with the magnetic-field-induced alignment of the nanotubes.
Bibliographical noteFunding Information:
This work was supported by the Robert A. Welch Foundation (through Grant No. C-1509), the Texas Advanced Technology Program (through Project No. 003604-0001-2001), and the National Science Foundation CAREER Award (through Grant No. DMR-0134058). A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by NSF Cooperative Agreement No. DMR-0084173 and by the State of Florida.