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Level fluctuations and many-body effects in disorder-free quantum dots
- Authors
- Cha, Min-Chul; Yang, S.-R. Eric
- Issue Date
- Jan-2000
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW B, v.61, no.3, pp.1720 - 1723
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW B
- Volume
- 61
- Number
- 3
- Start Page
- 1720
- End Page
- 1723
- ISSN
- 1098-0121
- Abstract
- We have investigated whether many-body effects can induce significant level fluctuations in a disorder-free quantum dot. The closed energy shell structures and relaxation of the Hartree-Fock (HF) potentials are found to play a significant role. The level degeneracy consistent with the rotational symmetry of the confining potential determines the structure of the energy shells. A closed shell state of a dot can give rise to large fluctuations. When a strong magnetic field is present the shell structure is absent and fluctuations are significantly reduced.
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Related Researcher
- Cha, Min Chul
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY (DEPARTMENT OF PHOTONICS AND NANOELECTRONICS)