Phase diagram for a frustrated disordered Blume-Emery-Griffiths model

被引:4
|
作者
Puha, I
Diep, HT
Campbell, I
机构
[1] Univ Cergy Pontoise, LPThM, F-95302 Cergy Pontoise, France
[2] Univ Paris Sud, LPS, F-91405 Orsay, France
关键词
D O I
10.1063/1.369085
中图分类号
O59 [应用物理学];
学科分类号
摘要
The critical behavior of the three-dimensional Blume-Emery-Griffiths model with weak quenched disorder is studied using standard and histogram Monte Carlo calculations. It was argued in previous studies that, with the introduction of bond randomness, first-order behavior cedes to some degree to second-order behavior for d less than or equal to 2. We show, in d=3 spatial dimensions, first-order phase transitions that have taken place in the investigated model disappear only at a finite amount of randomness. (C) 1999 American Institute of Physics. [S0021-8979(99)28408-3].
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收藏
页码:6070 / 6072
页数:3
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