Gnezdilov, V.; Bedarev, V.; Pashkevich, Yu.; Lemmens, P.; Zvyagin, S.; Gnatchenko, S.; Pashchenko, M.; Mo, X.; Queen, W.; Hwu, S.J.
(Физика низких температур, 2007)
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 ...