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Parity Effects in Stacked Nanoscopic Quantum Rings

Kang-Hun Ahn·Peter Fulde
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Abstract

The ground state and the dielectric response of stacked quantum rings are investigated in the presence of an applied magnetic field along the ring axis. For odd number $N$ of rings and an electric field perpendicular to the axis, a linear Stark effect occurs at distinct values of the magnetic field. At those fields energy levels cross in the absence of electric field. For even values of $N$ a quadratic Stark effect is expected in all cases, but the induced electric polarization is discontinuous at those special magnetic fields. Experimental consequences for related nanostructures are discussed.

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Kang-Hun Ahn, Peter Fulde. 2000-08-08. Parity Effects in Stacked Nanoscopic Quantum Rings. https://doi.org/10.1103/physrevb.62.r4813

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