MAGNETOCONTROLLED QUANTUM STATES IN HELICOIDAL TUBULES

We have studied the quantum motion of charge carriers through a period ical system of atoms placed along a cylindrical spiral (of fullerene t ubule kind) in the presence of an external magnetic field. Expressions for a quasi-one-dimensional dispersion law have been obtained within the framework of the modified tight-binding model. These expressions e xhibit side minima and a nontrivial dependence on the magnetic field. Possible experimental manifestations are discussed.