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Electronic transport through a quantum dot network
August Dorn, Thomas Ihn, Klaus Ensslin +2
The conductance through a finite quantum dot network is studied as a function of inter-dot coupling. As the coupling is reduced, the system undergoes a transition from the antidot…
Spatially resolved manipulation of single electrons in quantum dots using a scanned probe
A. Pioda, S. Kicin, T. Ihn +7
The scanning metallic tip of a scanning force microscope was coupled capacitively to electrons confined in a lithographically defined gate-tunable quantum dot at a temperature of 3…
Multiple layer local oxidation for fabricating semiconductor nanostructures
M. Sigrist, A. Fuhrer, T. Ihn +3
Coupled semiconductor nanostructures with a high degree of tunability are fabricated using local oxidation with a scanning force microscope. Direct oxidation of the GaAs surface of…
Time-Resolved Detection of Individual Electrons in a Quantum Dot
R. Schleser, E. Ruh, T. Ihn +3
We present measurements on a quantum dot and a nearby, capacitively coupled, quantum point contact used as a charge detector. With the dot being weakly coupled to only a single res…
Kondo Effect in a Many-Electron Quantum Ring
A. Fuhrer, T. Ihn, K. Ensslin +2
The Kondo effect is investigated in a many-electron quantum ring as a function of magnetic field. For fields applied perpendicular to the plane of the ring a modulation of the Kond…
Spin Effects in a Quantum Ring
T. Ihn, A. Fuhrer, K. Ensslin +2
Recent experiments are reviewed that explore the spin states of a ring-shaped many-electron quantum dot. Coulomb-blockade spectroscopy is used to access the spin degree of freedom.…