Neutral and charged excitons in a quantum tube
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概要
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The optical transition energies of neutral and charged excitons in a quantum tube are calculated as a function of the Aharonov–Bohmmagnetic flux U. The oscillation amplitude of the ground state energy of the electron–hole relative motion is shown to be larger in aquantum tube than a quantum ring with strong confinement in the axis direction. We find a double maxima structure in the optical transitionenergy for a quantum tube with radius R = 0.5 in units of the effective Bohr radius because of the difference in the U dependenciesbetween the single electron energy and the relative-motion energy of a charged exciton state.
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Elsevier | 論文
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