Register to reply

Bounds on the chemical potential of electrons

by Useful nucleus
Tags: bounds, chemical, electrons, potential
Share this thread:
Useful nucleus
#1
Feb7-14, 03:47 AM
Useful nucleus's Avatar
P: 261
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?
Phys.Org News Partner Physics news on Phys.org
A new, tunable device for spintronics
Researchers study gallium to design adjustable electronic components
Gadolinium-based material that can be cooled by varying magnetic field
DrDu
#2
Feb7-14, 09:36 AM
Sci Advisor
P: 3,593
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.
Useful nucleus
#3
Feb7-14, 10:41 AM
Useful nucleus's Avatar
P: 261
Quote Quote by DrDu View Post
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?

DrDu
#4
Feb7-14, 03:11 PM
Sci Advisor
P: 3,593
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.
Useful nucleus
#5
Feb7-14, 08:44 PM
Useful nucleus's Avatar
P: 261
Quote Quote by DrDu View Post
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!


Register to reply

Related Discussions
Electric Potential and bounds of integration Introductory Physics Homework 2
Chemical bounds Chemistry 4
Electrochemical potential, chemical potential and Fermi levels. Ashcroft is confusing Atomic, Solid State, Comp. Physics 0
Energized Electrons in Chemical Bonding Atomic, Solid State, Comp. Physics 1
Describing chemical potential in Galvanic cell using Coulomb Force/Electric Potential Classical Physics 0