513.001 Molecular and Solid State Physics

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Physical
Constants

Periodic System
of Elements

      

Pyroelectricity

Pyroelectricity describes how the electric polarization changes as the temperature changes. The pyroelectric coefficients form a rank 1 tensor πi.

dPi/dT = πi

The generating matrix of the point group m is,

.

(a) Give the independent tensor elements for this point group.

(b) How could the pyroelectric coefficient be calculated from the microscopic quantum states of the crystal?