Scaling of the Fermi‐Edge Singularity in Quantum Dots

The transport characteristics of resonant tunneling through self‐assembled InAs quantum dots is explored. Changing the tunneling direction of the electrons leads to major differences in their behavior. By analyzing magnetotransport and shot noise measurements, this effect can be ascribed to differen...

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Bibliographic Details
Published in:physica status solidi (b) 2019-06, Vol.256 (6), p.n/a
Main Authors: Kühne, Jan K., Haug, Rolf J.
Format: Article
Language:English
Subjects:
Fermi‐edge singularity
magnetotransport
quantum dots
shot noise
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Summary:The transport characteristics of resonant tunneling through self‐assembled InAs quantum dots is explored. Changing the tunneling direction of the electrons leads to major differences in their behavior. By analyzing magnetotransport and shot noise measurements, this effect can be ascribed to different dimensionalities in the leads. In particular we are interested in the Fermi‐edge singularity, which is studied by its noise and temperature behavior. The Fermi‐edge singularity is studied in nanostructures by its transport properties resulting in an enhancement in both the current and the shot noise. The dimensionality of the system is known to have a strong influence on interaction effects between the electrons. In quantum dot systems the properties of the leads are investigated by magnetotransport measurements.
ISSN:0370-1972
1521-3951
DOI:10.1002/pssb.201800510