What is the Relationship Between Seebeck Coefficient and Temperature Gradient?

mcodesmart
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The Seebeck coefficient is the differential drop in voltage per unit temperature across a conductor. Goldsmid says that there must be a temp. gradient across a junction for a seebeck coefficeint to be defined. This makes sense if the difference in the fermi level energy between two dissimilar contacts that causes a change in energy of the electron as it jumps from one metal to another.

But I usually hear that the Seebeck coefficient is the property of the metal itself.

Any comments to clear this up would be received.
 
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