Search
Results
-
Tunable charge detectors for semiconductor quantum circuits
(2013)New Journal of PhysicsNanostructures defined in high-mobility two-dimensional electron systems offer a unique way of controlling the microscopic details of the investigated device. Quantum point contacts play a key role in these investigations, since they are not only a research topic themselves, but also turn out to serve as convenient and powerful detectors for their electrostatic environment. We investigate how the sensitivity of charge detectors can be ...Journal Article -
Cyclic depopulation of edge states in a large quantum dot
(2013)New Journal of PhysicsWe investigate the magneto-transport through a 1.6 μm wide quantum dot (QD) with an adjacent charge detector, for different integer filling factors in the QD and constrictions. When this system is operated at a high transmission, it acts as a Fabry–Pérot interferometer, where transport is governed by a Coulomb blockade mechanism. For lower transmissions where the barriers are in the tunneling regime, we can directly measure the charge ...Journal Article