@article{oai:tsukuba.repo.nii.ac.jp:00009155, author = {野村, 晋太郎 and Nomura, Shintaro and Tsumura, Kohei}, issue = {2}, journal = {Surface science}, month = {Jan}, note = {application/pdf, The optical transition energies of neutral and charged excitons in a quantum tube are calculated as a function of the Aharonov–Bohm magnetic flux U. The oscillation amplitude of the ground state energy of the electron–hole relative motion is shown to be larger in a quantum tube than a quantum ring with strong confinement in the axis direction. We find a double maxima structure in the optical transition energy for a quantum tube with radius R = 0.5 in units of the effective Bohr radius because of the difference in the U dependencies between the single electron energy and the relative-motion energy of a charged exciton state.}, pages = {441--449}, title = {Neutral and charged excitons in a quantum tube}, volume = {601}, year = {2007} }