New answers tagged electronic-band-theory
Short answer: The wave functions of neighbouring atoms (start to) overlap. It has been too long to provider a detailed answer...
use LTM to measure the contact resistance try to search on Google for it what u see up is In-electrode over SnS thin film
Every quantum state is described by some list of quantum numbers. But for most states, those quantum numbers have no relation to the quantum numbers in an atom. For example, the quantum numbers for an electron in a infinite square well can't be naturally stated in terms of atomic orbitals. So if I reformulate your question as "Do electrons in a band material ...
You can say they have one, but it doesn't mean very much. First off, as a technicality that will matter a bit: electrons don't "have" quantum numbers, electrons are described using quantum numbers. We find the quantum numbers do a good job of describing the behaviors of electrons, but the electrons themselves simply do whatever electrons do. In theory you ...
A free electron does not have a quantum number. For the hydrogen atom, if you provide 13.6eV of energy, the electron is free- it is no longer 'bound' to the atom, thus it's energy is no longer quantized. Atoms do not form bands. Atoms have discrete energy levels, there is no such thing as valence and conduction bands for an atom. If you bring N atoms close ...
try to use LTM method to measure ohmic contact between metal and semiconductor?
In a homojunction the barrier potential depends on the difference in Fermi levels been the n and p sides. If different materials are used (heterojunction) then there is an additional potential from intrinsic difference in electron affinity.
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