Universal fluctuations of Coulomb blockade peaks in quantum dots
| Autor: | Charles Marcus, M. Switkes, S. R. Patel, S. M. Cronenwett, K. L. Campman, Joshua Folk, Arthur C. Gossard, Andrew Huibers |
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| Rok vydání: | 1997 |
| Předmět: |
Physics
Condensed matter physics Chaotic Coulomb blockade Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Magnetic flux Quantum dot Magnetic flux quantum Quantum mechanics Probability distribution General Materials Science Electrical and Electronic Engineering Random matrix Parametric statistics |
| Zdroj: | Superlattices and Microstructures. 21:43-48 |
| ISSN: | 0749-6036 |
| DOI: | 10.1006/spmi.1996.0139 |
| Popis: | We describe recent measurements of the statistics and parametric correlations of Coulomb blockade peak heights in shape-deformable GaAs/A1xGa1−xAs quantum dots. We find good agreement between the measured distributions of peak heights and probability distributions predicted by random matrix theory for bothB= 0 andB≠ 0. The measured magnetic flux correlation lengthϕcis of the order of but less than one flux quantum through the dot,ϕc∼ 0.8ϕ0, inconsistent withϕcpredicted by universal scaling theory for isolated chaotic quantum dots. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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