Bounds on the chemical potential of electrons


by Useful nucleus
Tags: bounds, chemical, electrons, potential
Useful nucleus
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#1
Feb7-14, 03:47 AM
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In a semiconductor, is the chemical potential of electrons limited to take values only between the valence band maximum and conduction band minimum? Are there circumstances where it can cross these bounds?
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DrDu
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Feb7-14, 09:36 AM
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It probably depends on how you define a semiconductor. Even a band structure is just a theoretical construct which does not correspond to a measurable quantity. I think there are substances whose resistance decreases with temperature and are thus semiconductors which are not well described in terms of a band structure.
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Feb7-14, 10:41 AM
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It probably depends on how you define a semiconductor. Even a band structure is just a theoretical construct which does not correspond to a measurable quantity. I think there are substances whose resistance decreases with temperature and are thus semiconductors which are not well described in terms of a band structure.
Do you happen to recall an example or a paper discussing this issue?

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Feb7-14, 03:11 PM
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Bounds on the chemical potential of electrons


No, but I had in mind Landaus- Fermi Liquid theory and some work of W. Kohn from 1964 where he tries to work out what fundamentally makes up a metal.
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Feb7-14, 08:44 PM
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No, but I had in mind Landaus- Fermi Liquid theory and some work of W. Kohn from 1964 where he tries to work out what fundamentally makes up a metal.
Thank you for sharing your thoughts, DrDu!


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