Fractional periodic persistent current in a twisted normal metal loop: an exact result
Abstract
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 $\phi_0/p$ ($\phi_0=ch/e$, the elementary flux-quantum) periodicity. Such fractional periodicity provides a new finding in the study of persistent current.
- Publication:
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arXiv e-prints
- Pub Date:
- December 2008
- DOI:
- 10.48550/arXiv.0812.0467
- arXiv:
- arXiv:0812.0467
- Bibcode:
- 2008arXiv0812.0467M
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 7 pages, 4 figures