Calcium Rubidium Nitrate: Mode-Coupling $\beta$ Scaling without Factorization

M. Goldammer; C. Losert; J. Wuttke; W. Petry; F. Terki; H. Schober; P. Lunkenheimer

doi:10.1103/PhysRevE.64.021303

Calcium Rubidium Nitrate: Mode-Coupling $\beta$ Scaling without Factorization

Soft Condensed Matter 2009-11-07 v1 Statistical Mechanics

Authors: M. Goldammer , C. Losert , J. Wuttke , W. Petry , F. Terki , H. Schober , P. Lunkenheimer

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Abstract

The fast dynamics of viscous calcium rubidium nitrate is investigated by depolarized light scattering, neutron scattering and dielectric loss. Fast $\beta$ relaxation evolves as in calcium potassium nitrate. The dynamic susceptibilities can be described by the asymptotic scaling law of mode-coupling theory with a shape parameter $\lambda = 0.79$ ; the temperature dependence of the amplitudes extrapolates to $T_c\simeq 378$ K. However, the frequencies of the minima of the three different spectroscopies never coincide, in conflict with the factorization prediction, indicating that the true asymptotic regime is unreachable.

Keywords

crystal growth and phase transitions melting crystal structure of iron alloys

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@article{arxiv.cond-mat/0101429,
  title  = {Calcium Rubidium Nitrate: Mode-Coupling $\beta$ Scaling without Factorization},
  author = {M. Goldammer and C. Losert and J. Wuttke and W. Petry and F. Terki and H. Schober and P. Lunkenheimer},
  journal= {arXiv preprint arXiv:cond-mat/0101429},
  year   = {2009}
}

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10 pages, 11 figures, submitted to PRE

Calcium Rubidium Nitrate: Mode-Coupling $\beta$ Scaling without Factorization

Abstract

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