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Non-equilibrium Fluctuation Relations in a Quantum Coherent Conductor
Shuji Nakamura, Yoshiaki Yamauchi, Masayuki Hashisaka +8
We experimentally demonstrate the validity of non-equilibrium fluctuation relations by using a quantum coherent conductor. In equilibrium the fluctuation-dissipation relation leads…
Evidence for localization and 0.7 anomaly in hole quantum point contacts
Y. Komijani, M. Csontos, I. Shorubalko +5
Quantum point contacts implemented in p-type GaAs/AlGaAs heterostructures are investigated by low-temperature electrical conductance spectroscopy measurements. Besides one-dimensio…
Electron counting in quantum dots
S. Gustavsson, R. Leturcq, M. Studer +5
We use time-resolved charge detection techniques to investigate single-electron tunneling in semiconductor quantum dots. The ability to detect individual charges in real-time makes…
Quantum dots investigated with charge detection techniques
T. Ihn, Simon Gustavsson, Urszula Gasser +7
The detection of the quantum dot charge state using a quantum point contact charge detector has opened a new exciting route for the investigation of quantum dot devices in recent y…
Graphene quantum dots in perpendicular magnetic fields
J. Guettinger, C. Stampfer, T. Frey +2
We report transport experiments on graphene quantum dots. We focus on excited state spectra in the near vicinity of the charge neutrality point and signatures of the electron-hole…
Transport through graphene double dots
F. Molitor, S. Dröscher, J. Güttinger +4
We present Coulomb blockade measurements in a graphene double dot system. The coupling of the dots to the leads and between the dots can be tuned by graphene in-plane gates. The co…