81 citations · 153 across the 3 of their papers we have counts for
5 papers
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…
Magnetic field dependent transmission phase of a double dot system in a quantum ring
M. Sigrist, A. Fuhrer, T. Ihn +4
The Aharonov-Bohm effect is measured in a four-terminal open ring geometry based on a Ga[Al]As heterostructure. Two quantum dots are embedded in the structure, one in each of the t…
Singlet-Triplet Transition Tuned by Asymmetric Gate Voltages in a Quantum Ring
A. Fuhrer, T. Ihn, K. Ensslin +2
Wavefunction and interaction effects in the addition spectrum of a Coulomb blockaded many electron quantum ring are investigated as a function of asymmetrically applied gate voltag…
Operating a phase-locked loop controlling a high-Q tuning fork sensor for scanning force microscopy
T. Ihn, T. Vancura, A. Baumgartner +2
The implementation of a tuning fork sensor in a scanning force microscope operational at 300 mK is described and the harmonic oscillator model of the sensor is motivated. These sen…
Metal-Insulator Transition in a 2-Dimensional System with an Easy Spin Axis
V. Senz, U. Doetsch, U. Gennser +5
The low-temperature resistivity of a SiGe 2-dimensional hole gas has been studied using the gate controlled carrier density as a parameter. A metal-insulator transition is seen bot…