publication . Preprint . 2007

Physics behind the Debye temperature

Garai, Jozsef;
Open Access English
  • Published: 28 Feb 2007
Abstract
Textbooks introduce the Debye temperature to simplify the integration of the heat capacity. This approach gives the impression that the Debye temperature is a parameter which makes the integration more convenient. The Debye frequency cut occurs when the wavelength of the phonon frequency reaches the size of the smallest unit of the lattice which is the length of the unit cell. At frequencies higher than the cut off frequency the 'lattice' unable to 'see' the vibration because the wavelength of the vibration is smaller than the basic unit of the atomic arrangement; therefore, the vibration becomes independent from the lattice. The Debye cut off frequency or tempe...
Subjects
arXiv: Physics::Chemical Physics
free text keywords: Physics - Chemical Physics
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