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Geometry-dependent electro-optical properties of rectangular-crater quantum rings with off-centered impurities under orthogonal electric and magnetic fields
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DOI：10.1016/j.rinp.2026.108709.png)
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Abstract
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• Off-centered donor effects in non-circular quantum rings are analyzed. • Electron–donor interaction breaks symmetry and induces strong localization. • Geometry–impurity interplay leads to new anti-crossing structures. • Partial suppression of Aharonov–Bohm oscillations is observed. • Nearly field-independent optical absorption regimes are identified.
Keywords:
Quantum ring
Rectangle-shaped central crater
Aharonov–Bohm oscillations
Optical absorption
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