INTERFERENCE OF COULOMB BLOCKADE-LIKE AND PERSISTENT CURRENT MESOSCOPIC OSCILLATIONS IN QUANTUM RINGS

Persistent current and ''Coulomb blockade'' like oscillations of elect rons in a mescscopic quantum ring are analyzed within the framework of the exact Bethe ansatz solutions of two component Luttinger liquid (c orrelated electron systems and magnetic impurities models). Changes of the electron number and of the total magnetic moment governed by an e xternal voltage and magnetic field produce the saw-tooth oscillations of the ground state mesoscopic energy, similar to the Coulomb blockade effect. The interference of these oscillations and the Aharonov-Bohm- Casher (ABC) persistent currents can be observed, e.g. as an initial p hase shift of the persistent currents. The generalization for multicha nnel Luttinger liquid case is performed. The recent result of experime nt on interference effects in mesoscopic semiconductor rings is explai ned.