Specific features of the electronic states and interband absorption coefficient in a cylindrical nanotube of finite thickness with a vertical potential of confinement

In this paper the features of one-electron states in a circular cylindrical sector are investigated. The finite thickness of the cylinder and the spatial expansion of the barrier, which runs along the cylinder generatrix, are taken into account. In the framework of the proposed model the distribution of electrons in the quantum states, as well as features of interband absorption of electromagnetic radiation, is theoretically investigated.