Tunneling in the quantum Hall regime between orthogonal quantum wells

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.11309

Huber, Michael ; Grayson, M. ; Rother, Martin ; Deutschmann, R. A. ; Biberacher, W. ; Wegscheider, Werner ; Bichler, Max ; Abstreiter, Gerhard

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Veröffentlichungsdatum dieses Volltextes: 07 Dez 2009 13:17

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Zusammenfassung

We present experimental investigations of tunneling between two quantum wells forming a T-shaped structure. At zero magnetic field we observe a nonlinear tunnel characteristic with clearly pronounced negative differential resistance. With magnetic field B, both quantum wells can independently be set in a quantum Hall state. We demonstrate spectroscopy of Quantum Hall bulk states in one B field ...