Fractional Periodic Persistent Current in a Twisted Normal Metal Loop: An Exact Result
We explore a novel mechanism for control of periodicity in persistent current in a twisted normal metal loop threaded by a magnetic flux &phi. A simple tight-binding model is used to describe the system. Quite interestingly we see that, depending on the number of twist p, the persistent current exhibits &phi0/p (&phi0 = ch/e, the elementary flux-quantum) periodicity. Such fractional periodicity provides a new finding in the study of persistent current.
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Document Type: Research Article
Publication date: 2009-01-01
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