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Transport in Quasi-Ballistic Quantum Wires and Rings

  • Khaled Ismail
Conference paper

Summary

We report on the fabrication and measurement results in relatively long (2–4 microns) quantum wires and rings. Despite the presence of elastic scattering in these geometries, quasi-ballistic transport is manifested in quantized conductance steps, similar to those observed in point contacts. In addition, the wires show a new resonance at higher temperature in the range of 50K–250K. This is attributed to a phonon inter-subband resonance. The rings show a variety of novel effects, among them classical electron focusing, and the observation of AharonovBohm oscillations in the extremely high resistance limit.

Keywords

Quantum Wire Electron Beam Lithography Single Wire Parallel Ring Quantum Point Contact 
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Copyright information

© Springer Japan 1992

Authors and Affiliations

  • Khaled Ismail
    • 1
    • 2
  1. 1.Watson Research CenterIBMYorktown HeightsUSA
  2. 2.Dept. of Electronics and Communications, Faculty of EngineeringCairo UniversityEgypt

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