Dynamics of librational motion in <i>N</i>2-type crystals. II. Joint account of anharmonic and correlation effects
T. N. AntsyginaPhysicotechnical Institute of Low Temperaures, Academy of Sciences of the Ukrainian SSR, Khar’kovV. A. SlyusarevPhysicotechnical Institute of Low Temperaures, Academy of Sciences of the Ukrainian SSR, Khar’kovYu. A. FreĭmanPhysicotechnical Institute of Low Temperaures, Academy of Sciences of the Ukrainian SSR, Khar’kovА. И. ЭренбургPhysicotechnical Institute of Low Temperaures, Academy of Sciences of the Ukrainian SSR, Khar’kov
ABI
Abstract
The dynamics of librational motion in N2-type crystals is treated by taking into account both correlation and anharmonic effects. Temperature dependences of the order parameter, heat capacity, mean and free energies of the librational subsystems are calculated. Comparison is made with results of a computer experiment obtained by the Monte-Carlo method.
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