Structural phase transition in two-dimensional tetramer-cuprate Na5RbCu4(AsO4)4Cl2

Автор(и)

  • V. Gnezdilov B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • W. Queen Department of Chemistry, Clemson University, Clemson, SC 29634, USA
  • X. Mo Department of Chemistry, Clemson University, Clemson, SC 29634, USA
  • M. Pashchenko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • S. Gnatchenko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • S. Zvyagin Hochfeld-Magnetlabor, Forschunszentrum Rossendorf, 01328 Dresden, Germany
  • P. Lemmens Institute for Physics of Condensed Matter, TU Braunschweig, Braunschweig D-38106, Germany
  • Yu. Pashkevich A. Galkin Donetsk Physico-Technical Institute of the National Academy of Sciences of Ukraine 72 R. Luxemburg Str., Donetsk 83114, Ukraine
  • V. Bedarev B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
  • S.-J. Hwu Department of Chemistry, Clemson University, Clemson, SC 29634, USA

DOI:

https://doi.org/10.1063/1.2747045

Ключові слова:

structural phase transition, optical birefringence, Raman scattering.

Анотація

Using Raman scattering and optical birefringence we have investigated a low-temperature phase transition in single crystal of the two-dimensional Na5RbCu4(AsO4)4Cl2. Phonon anomalies point to a first order nature of the transition. The observed transition is most probably related to a order-disorder transition of the Rb ion positions along the z axis within the ionic framework of mixed alkali metal chloride lattices.

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Опубліковано

2007-07-02

Як цитувати

(1)
Gnezdilov, V.; Queen, W.; Mo, X.; Pashchenko, M.; Gnatchenko, S.; Zvyagin, S.; Lemmens, P.; Pashkevich, Y.; Bedarev, V.; Hwu, S.-J. Structural Phase Transition in Two-Dimensional Tetramer-Cuprate Na5RbCu4(AsO4)4Cl2. Fiz. Nizk. Temp. 2007, 33, 897-901.

Номер

Том 33 № 8 (2007)

Розділ

Низькотемпературний магнетизм

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