Is is possible to find unoccupied states below fermi energy?

[arierreF]

Is is possible to find unoccupied states below fermi energy??

Or all states below fermi energy are always occupied?

 

[ZapperZ]

Is is possible to find unoccupied states below fermi energy??

Or all states below fermi energy are always occupied?

At T=0K, in a metal, it is DEFINED as the highest occupied energy state.

So what you are asking is whether we can negotiate our definition.

Zz.

 

[sarose]

no, it is not possible

 

[hokhani]

Is is possible to find unoccupied states below fermi energy??

Or all states below fermi energy are always occupied?

Yes, It is possible. In a semiconductor the Fermi level is usually between conduction and valence band and we can have hole (unoccupied state) in valence band.