Fermi Energy & Optical Transitions

iansullivan88
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Hello,

I have a question which has something to do with band structures etc:

A two dimensional solid has two electrons per unit cell. The crystal potential is weak and the solid behaves like a free electron metal.

Estimate the threshold for interband optical transitions in terms of the fermi energy.


I have no idea where to begin with this really. Any help would be appreciated.

Thanks

Ian
 
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iansullivan88 said:
Hello,

I have a question which has something to do with band structures etc:

A two dimensional solid has two electrons per unit cell. The crystal potential is weak and the solid behaves like a free electron metal.

Estimate the threshold for interband optical transitions in terms of the fermi energy.


I have no idea where to begin with this really. Any help would be appreciated.

Thanks

Ian



How much physics have you done?

Do you know the physics behind free electron metals?
 
I found an answer now. It was to do with band structure. Thanks for trying to help.

Ian
 
iansullivan88 said:
I found an answer now. It was to do with band structure. Thanks for trying to help.

Ian

How did you calculate it in the end?
 

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