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

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

1996-06-27

arxiv.org/abs/cond-mat/9606202v1

Physics

Condensed Matter

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

Scientific paper

10.1016/S0921-4526(96)00492-9

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).

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