| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Current Fluctuations in a Semiconductor Quantum Dot with Large Energy Spacing |
| JEONG Heejun** |
Department of Applied Physics, Hanyang University, Ansan 426-791, Korea
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| Cite this article: |
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JEONG Heejun 2014 Chin. Phys. Lett. 31 127304 |
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Abstract We report on the measurements of the current noise properties of electron tunneling through a split-gate GaAs quantum dot with large energy level spacing and a small number of electrons. Shot noise is full Poissonian or suppressed in the Coulomb-blockaded regime, while it is enhanced to show as super-Poissonian when an excited energy level is involved by finite source-drain bias. The results can be explained by multiple Poissonian processes through multilevel sequential tunneling.
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Published: 12 January 2015
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