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Effect of Aharonov-Bohm Phase on Spin Tunneling

ChangSoo Park·D. K. Park
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Abstract

The role of Aharonov-Bohm effect in quantum tunneling is examined when a potential is defined on the $S^1$ and has $N$-fold symmetry. We show that the low-lying energy levels split from the $N$-fold degenerate ground state oscillate as a function of the Aharonov-Bohm phase, from which general degeneracy conditions depending on the magnetic flux is obtained. We apply these results to the spin tunneling in a spin system with $N$-fold rotational symmetry around a hard axis.

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ChangSoo Park, D. K. Park. 2000-08-11. Effect of Aharonov-Bohm Phase on Spin Tunneling. https://doi.org/10.1142/s0217984900001130

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