Eu0.5Sr1.5MnO4: A three-dimensionalXYspin glass
作者： R. Mathieu , A. Asamitsu , Y. Kaneko , J. P. He , Y. Tokura
DOI: 10.1103/PHYSREVB.72.014436
关键词:
摘要: The frequency, temperature, and dc-bias dependence of the ac-susceptibility a high quality single crystal Eu$_{0.5}$Sr$_{1.5}$MnO$_4$ layered manganite is investigated. behaves like XY spin glass with strong basal anisotropy. Dynamical static scalings reveal three-dimensional phase transition near $T_g$ = 18 K, yield critical exponent values between those Heisenberg- Ising-like systems, albeit slightly closer to Ising case. Interestingly, as in latter system, here observed rejuvenation effects are rather weak. origin nature low temperature state discussed.
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