Nature of eigenstates in a mesoscopic ring coupled to a side branch

Abstract

We formalize the parity effect of a multichannel ring coupled to a side branch using the tight binding model. We find that the tight binding model gives slightly different result from the continuum model. We also show that some states of the system can be nonmagnetic. In the multichannel ring coupled to a side branch, the persistent current in the ring does not change sign, over gigantic fluctuations in N (the number of particles in the ring).

Nine figures available on request. The paper was submitted to Physica B in January,1996

References in corpus (6)

• Aharonov-Bohm oscillations in a mesoscopic ring with a quantum dot
• Charge Transfer Induced Persistent Current and Capacitance Oscillations
• A Simple Formula for the Persistent Current in Disordered 1D Rings: Parity and Interaction Effects
• Characteristic Potentials for Mesoscopic Rings Threaded by an Aharonov-Bohm Flux
• Strong-Correlations Versus U-Center Pairing and Fractional Aharonov-Bohm Effect
• Persistant Current in Isolated Mesoscopic Rings

Cited by in corpus (2)

• Persistent Currents in Small, Imperfect Hubbard Rings
• Temperature enhanced persistent currents and "${\varphi }_0/2$ periodicity"