Spin Blockade in Capacitively Coupled Quantum Dots
M. C. Rogge, C. Fuhner, U. F. Keyser, R. J. Haug
TL;DR
This paper reports on transport measurements of a lateral double quantum dot, demonstrating tunable coupling and observing spin blockade in the capacitive coupling regime, with analysis of interdot effects.
Contribution
It introduces a method to switch between capacitive and tunnel coupling in a double quantum dot and analyzes spin blockade under capacitive coupling.
Findings
Demonstrated tunable coupling in a double quantum dot
Observed spin blockade in the capacitive coupling regime
Analyzed the influence of interdot capacitive coupling on spin blockade
Abstract
We present transport measurements on a lateral double dot produced by combining local anodic oxidation and electron beam lithography. We investigate the tunability of our device and demonstrate, that we can switch between capacitive and tunnel coupling. In the regime of capacitive coupling we observe the phenomenon of spin blockade in a magnetic field and analyze the influence of capacitive interdot coupling on this effect.
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