Critical behavior of Griffiths ferromagnets.
From a heuristic calculation of the leading order essential singularity in the distribution of Yang-Lee zeroes, we obtain new scaling relations near the ferromagnetic-Griffiths transition, including the prediction of a discontinuity on the analogue of the critical isotherm. We show that experimental data for the magnetization and heat capacity of La(0.7)Ca(0.3)MnO(3) are consistent with these predictions, thus supporting its identification as a Griffiths ferromagnet.
Chan
Pak Yuen
PY
Department of Physics, University of Illinois at Urbana-Champaign, Loomis Laboratory of Physics, 1110 W. Green St., Urbana, Illinois 61801-3080, USA.
Goldenfeld
Nigel
N
Salamon
Myron
M