Thermodynamics of an incommensurate quantum crystal.

  title={Thermodynamics of an incommensurate quantum crystal.},
  author={Philip W. Anderson and William F. Brinkman and David A Huse},
  volume={310 5751},
We present a theory of the thermodynamics of an incommensurate quantum solid. The ground state of the solid is assumed to be an incommensurate crystal, with quantum zero-point vacancies and interstitials and thus a non-integer number of atoms per unit cell. We show that at low temperature T, the variation of the net vacancy concentration should be as T4 and that the first correction to the specific heat due to this varies as T7; these are quite consistent with experiments on solid helium-4. We… CONTINUE READING