Current Shot Noise and Bunching of Electrons in Multilevel Quantum Dots

• Authors: G. Michałek , B. Bułka
• Languages of publication: EN

Abstracts

EN

Currents and their fluctuations in multilevel quantum dots are studied theoretically in the limit of sequential tunneling. The spin degrees of freedom, many-body electronic states (singlet and triplet) as well as relaxation processes between the levels of the quantum dots are considered. In general, due to the rapid relaxation processes the shot noise is sub-Poissonian, however for a large polarization of the outgoing currents from the singlet and triplet states one gets the super-Poissonian type of the shot noise due to the bunching of tunneling events.

Keywords

EN

73.23.-b; 72.70.+m

Discipline

• 72.70.+m: Noise processes and phenomena
• 73.23.-b: Electronic transport in mesoscopic systems

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 27-30

Dates

published

2008-01

received

2007-07-09

Contributors

author

G. Michałek

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

B. Bułka

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.113.27