For metals, the linear term of this quantity dominates at very low temperatures, while a cubic term dominates above a few Kelvins.
For metals, the linear term of this quantity dominates at very low temperatures, while a cubic term dominates above a few Kelvins. For a free electron gas, it is proportional to temperature and to density of levels. The failure of harmonic approximation explains why it does not reach 3 times n times Boltzmann's constant at high temperature, violating the law of Dulong and Petit. At lower temperatures, it is described by the Debye and Einstein models. FTP, name this quantity which will also raise the temperature of a unit mass of a substance by one degree Celsius.
For metals, the linear term of this quantity dominates at very low temperatures, while a cubic term dominates above a few Kelvins.
{specific heat} or {heat capacity}