| Original Articles |
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Ground-State Transitions in Two Vertically Coupled Single Electron Quantum Dots |
| XIE Wen-fang |
| Department of Physics, Guangzhou Normal University, Guangzhou 510400 |
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| Cite this article: |
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XIE Wen-fang 1999 Chin. Phys. Lett. 16 53-55 |
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Abstract Exact results for the two vertically coupled two-dimensional single electron quantum dots are obtained as a function of magnetic field. The ground-state transition is investigated and the effect of the distance between a double-layer dot on the Coulomb interaction is studied. Our results show that when the inter-dot distance increases, a higher magnetic field is needed to induce ground-state transitions and that for sufficiently large distance no transitions occur. Hence, the short-ranged component of Coulomb interaction is important whether the ground-state transition appears in double-layer quantum dots.
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| Keywords:
73.20.Dx
73.20.Mf
73.40.Kp
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Published: 01 January 1999
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| PACS: |
73.20.Dx
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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73.40.Kp
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(III-V semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)
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