Tunneling in the quantum Hall regime between orthogonal quantum wells

M. Huber*, M. Grayson, M. Rother, R. A. Deutschmann, W. Biberacher, W. Wegscheider, M. Bichler, G. Abstreiter

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations

Abstract

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 orientation, and spectroscopy of edge states with the orthogonal orientation. The observed features can be explained assuming that transverse momentum is conserved during tunneling.

Original languageEnglish (US)
Pages (from-to)125-128
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume12
Issue number1-4
DOIs
StatePublished - Jan 1 2002
Event14th International Conference on the - Prague, Czech Republic
Duration: Jul 30 2001Aug 3 2001

Keywords

  • Quantum Hall effect
  • Tunneling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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