Elastic properties of compressed cryocrystals in a deformed atom model

9th International Conference on Cryocrystals and Quantum Crystals Odessa, Ukraine, September 2–8, 2012 (final part)

Автор(и)

  • Ie.Ie. Gorbenko Lugansk Taras Shevchenko National University, Oboronna Str., Lugansk 91011, Ukraine
  • I.V. Zhikharev Lugansk Taras Shevchenko National University, Oboronna Str., Lugansk 91011, Ukraine
  • E.P. Troitskaya Donetsk A.A. Galkin Physics and Technology Institute of the National Academy of Sciences of Ukraine 72 R. Luxemburg Str., Donetsk 83114, Ukraine
  • Val.V. Chabanenko Donetsk A.A. Galkin Physics and Technology Institute of the National Academy of Sciences of Ukraine 72 R. Luxemburg Str., Donetsk 83114, Ukraine
  • E.A. Pilipenko Donetsk A.A. Galkin Physics and Technology Institute of the National Academy of Sciences of Ukraine 72 R. Luxemburg Str., Donetsk 83114, Ukraine

DOI (Low Temperature Physics):


https://doi.org/10.1063/1.4811262

Ключові слова:

rare-gas crystals, high pressure, quadrupole deformation, elastic properties, Cauchy relation.

Анотація

A model with deformed atom shells is built to investigate the elastic properties of rare-gas crystals Ne and Kr under high pressure. It is shown that the observed deviation from the Cauchy relation δ cannot be adequately reproduced with taking into account of only the many-body interaction. The individual pressure dependence δ of is a result of competition of the many-body interaction and the quadrupole interaction associated with the quadrupole-type deformation of electron shells of the atoms during the displacements of the nuclei. Each kind of interaction makes a strongly pressure dependent contribution to δ . In the case of Ne and Kr, contributions of these interactions are compensated to the good precision, providing δ being almost constant against pressure.

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Опубліковано

2013-04-15

Як цитувати

(1)
Ie.Ie. Gorbenko, I.V. Zhikharev, E.P. Troitskaya, Val.V. Chabanenko, and E.A. Pilipenko, Elastic properties of compressed cryocrystals in a deformed atom model: 9th International Conference on Cryocrystals and Quantum Crystals Odessa, Ukraine, September 2–8, 2012 (final part), Low Temp. Phys. 39, (2013) [Fiz. Nizk. Temp. 39, 716-721, (2013)] DOI: https://doi.org/10.1063/1.4811262.

Номер

Том 39 № 6 (2013)

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