What is potential barrier and what is potential well - and these arises for what conditions?...

What is potential barrier and what is potential well - and these arises for what conditions? How atomic potential is related with lattice spacing? Please explain all with detailed discussions and clear figures. Thank you.

when the concept of potential barrier is important? and when it is inportant for potental well?

Is there any relation with the above (or any one of the above) with atomic spacing?

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genius_generous answered 1 year ago

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