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Aharonov-Casher phase and persistent current in a polyacetylene ring

Zhijian Li·J. Q. Liang·F. -C. Pu
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Abstract

We investigate a polyacetylene ring in an axially symmetric, static electric field with a modified SSH Hamiltonian of a polyacetylene chain. An effective gauge potential of the single electron Hamiltonian due to spin-field interaction is obtained and it results in a Fröhlich's type of superconductivity equivalent to the effect of travelling lattice wave. The total energy as well as the persistent current density are shown to be a periodic function of the flux of the gauge field embraced by the polyacetylene ring.

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Zhijian Li, J. Q. Liang, F. -C. Pu. 2001-11-23. Aharonov-Casher phase and persistent current in a polyacetylene ring. https://doi.org/10.1088/0953-8984%2F13%2F4%2F308

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