Explanation of Energy Bands in Solids

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Homework Help Overview

The discussion revolves around the concept of energy bands in solids, exploring the underlying reasons for their existence and the nature of these bands in the context of atomic interactions.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants attempt to define energy bands and question the correctness of their definitions, discussing the interaction of atomic orbitals and the implications of atomic proximity on energy levels.

Discussion Status

The conversation is ongoing, with participants providing feedback on each other's definitions and seeking clarification on the nature of energy bands. There is an exploration of different interpretations regarding the characteristics of energy bands and the factors contributing to their formation.

Contextual Notes

Some participants express the need for more detailed explanations and question the accuracy of initial statements regarding energy bands and their properties.

lotrsimp12345
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Homework Statement


What is the reason for energy bands in solids?


Homework Equations





The Attempt at a Solution


because of close proximty of atoms
 
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And the question is...?
 
is that answer correct?
 
Not really :-/ More detail would help, I imagine.
 
when 2 orbitals interact you end up with 2 different orbitals one with low energy and one with high? Would that be enough detail?
 
is this correct?
An energy band is a continuous distribution of similar energy levels?

What is the reason for energy bands in solids?
The reason is there is a close proximity of many atoms which is because the energy difference becomes very small. So the energy is bundled together rather than representing indivual energy levels.
 
lotrsimp12345 said:
is this correct?
An energy band is a continuous distribution of similar energy levels?
Something like that... I'd phrase it like so: an energy band is a range of energies in which there are a large number of closely spaced energy levels and which is bounded above and below by "forbidden regions" with no energy levels, such that the forbidden regions are large compared to the interlevel spacing within the energy band.
 

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