Showing papers by "Marco Ronchetti published in 1990"
01 Jan 1990
TL;DR: In this paper, the authors analyze defects in quasicrystals by simulating their generation during growth, and by studying their dynamics during relaxation at finite temperature, and find that phason relaxation occurs only in presence of vacancies.
Abstract: We analyze defects in quasicrystals by simulating their generation during growth, and by studying their dynamics during relaxation at finite temperature. In a first simulation, based on a Eden-type growth algorithm of a Penrose Tiling, we observe defects similar to vacancies which do not destroy quasi-long-range order. In a second simulation, a molecular dynamics based on an atomistic model, we find that phason relaxation occurs only in presence of vacancies.
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