Numerical Study of Ordering Processes in a One-Dimensional System with Quenched Impurities

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Ordering processes in a one-dimensional systeun with quenched impurities and negligible ther-mat noise for the case of nor-conserved order parattueter is investigated numerically. We findthe following restrlts. (i) For a large impurity density, the average size of' a st?tble dornain, l(t),shows a crossover frorn the growth due to the drif't tauotion, let) X ln#, at tlae early stage in oursirntrlation to a slowing doxvn of the growth at the late stage. The proportionality coefficientof this logarismic law is a decreasing i'trnction of the itnptrrity density. (ii) Scaling property ofthe dornain size distribution ftrnction is satisfied for the region of a large size and the scaleddistribution function is independent of the impurity density.
社団法人日本物理学会の論文
1997-10-15