Fractional Aharonov-Bohm effect in mesoscopic rings

Details Fractional Aharonov-Bohm effect in mesoscopic rings Fractional Aharonov-Bohm effect in mesoscopic rings

1996-03-29

arxiv.org/abs/cond-mat/9603191v1

Physics

Condensed Matter

14 pages (Revtex), 5 postscript figures. Send e-mail to: ferrari@df.uba.ar

Scientific paper

10.1088/0953-8984/8/44/010

We study the effects of correlations on a one dimensional ring threaded by a uniform magnetic flux. In order to describe the interaction between particles, we work in the framework of the U $\infty$ Hubbard and $t$-$J$ models. We focus on the dilute limit. Our results suggest the posibility that the persistent current has an anomalous periodicity $\phi_{0}/p$, where $p$ is an integer in the range $2\leq p\leq N_{e}$ ($N_{e}$ is the number of particles in the ring and $\phi_{0}$ is the flux quantum). We found that this result depends neither on disorder nor on the detailed form of the interaction, while remains the on site infinite repulsion.

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