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Electric Field Heating of Supported and Free-Standing AuPd Fine Wires

  • C. G. Smith
  • M. N. Wybourne
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 13)

Abstract

Using electron-beam lithography, fine AuPd wires of 50 nm and 30 nm thickness have been fabricated over a length of 10 μm on a Si3N4 substrate. The resistance rise as a function of temperature fits well to one-dimensional Coulomb interactions for low temperatures. On etching away the substrate the functional form of the resistance rise changes and cannot be fitted to theory. It is found that for a supported wire the energy loss is limited by the electron-phonon scattering rate which is proportional to the square of the electron temperature. For a free-standing wire the heat loss is limited by diffusion of electrons and phonons along the wire. Recently 100 nm width and 5 nm thickness have been made free standing over a length of 15 μm.

Keywords

Tunnel Junction Quantum Noise Conversion Gain Josephson Current Superconducting Tunnel Junction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag Berlin Heidelberg 1986

Authors and Affiliations

  • C. G. Smith
    • 1
  • M. N. Wybourne
    • 2
  1. 1.Cavendish LaboratoryCambridgeUK
  2. 2.GEC Research Ltd.Wembley, Middx.UK

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