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Metals and semiconductors at high bias

  1. Mar 29, 2013 #1

    Is there a well known theory on how metals and semiconductors should behave, electrically, while under a high voltage bias? Say, 2-3V? For example, how does the conductivity change as a function of voltage bias as we go from the low bias regime into high bias? Is there a linear dependence or is it described by a power law?

    Thank you!
  2. jcsd
  3. Mar 29, 2013 #2


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    Your question is unclear. Are you talking about devices? Which ones? What does it mean to have a "metal under bias"?
  4. Mar 29, 2013 #3
    Not devices, just a metal connected by source drain electrodes, for example.

    Take a 1um diameter copper wire and sweep the potential from 0V to 3V. Will the current have a linear dependence on voltage? What about a semiconductor?

    For example, theory wise, the dependence of current on temperature can be described by the Bloch Gruneisen relationship, but I was hoping for more insight on current dependence on voltage.
    Last edited: Mar 29, 2013
  5. Mar 30, 2013 #4
    does my question make sense?
  6. Mar 30, 2013 #5


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    Yes, but I'm not familiar enough with Bloch Gruniesen relations, etc. to answer it. I'm hoping someone else will chime in.
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