Lattice distortion in hcp rare gas solids

• Published in: Физика низких температур
• Date: 2010
• Main Authors: Grechnev, A., Tretyak, S.M., Freiman, Yu.A.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2010
• Subjects: Физические свойства криокристаллов
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/117019
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Lattice distortion in hcp rare gas solids / A. Grechnev, S.M. Tretyak, Yu.A. Freiman // Физика низких температур. — 2010. — Т. 36, № 4. — С. 423-428. — Бібліогр.: 25 назв. — англ.

The lattice distortion parameter δ≡c/a – √8/3 has been calculated as a function of molar volume for the hcp phases of He, Ar, Kr, and Xe. Results from both semi-empirical potentials and density functional theory are presented. Our study shows that δ is negative for helium in the entire pressure rang...