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Published on: May 15, 2017
Renormalization-group analysis of the R(I)-R(V) rotator phase transition
1Department of Physics, Presidency University, 86/1 College Street, Kolkata-700 073, India. pkmuk1966@gmail.com
Abstract:
A model for coupled tilt angle and lattice distortion parameter is proposed to describe the R(I)-R(V) transition in n-alkane. The model is treated in the framework of a Landau mean-field theory and renormalization-group theory. The influence of gauche conformations and molecular flexibility on the R(I)-R(V) transition is discussed within the mean-field theory. The fluctuations on the R(I)-R(V) transition are discussed by the renormalization-group theory. Renormalization-group theory predicts that the R(I)-R(V) transition can be driven first order by fluctuations and becomes second order at a tricritical point. Available experimental data are consistent with our model.
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