Spin-dependent shot noise enhancement in a quantum dot
Niels Ubbelohde, Christian Fricke, Frank Hohls, and Rolf J. Haug
TL;DR
This paper investigates how spin-dependent effects influence shot noise in a quantum dot, revealing super-Poissonian noise patterns linked to spin-related transport channel competition.
Contribution
It demonstrates the role of spin-dependent dynamical blockade and edge channel effects in modulating shot noise in quantum dots under magnetic fields.
Findings
Observation of super-Poissonian shot noise patterns
Correlation between noise and spin-dependent transport channels
Influence of Landau orbitals on tunnel coupling
Abstract
The spin-dependent dynamical blockade was investigated in a lateral quantum dot in a magnetic field. Spin-polarized edge channels in the two-dimensional leads and the spatial distribution of Landau orbitals in the dot modulate the tunnel coupling of the quantum dot level spectrum. In a measurement of the electron shot noise we observe a pattern of super-Poissonian noise which is correlated to the spin-dependent competition between different transport channels.
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