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arXiv 0811.0025cond-mat.dis-nncond-mat.stat-mech
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猝灭空位诱导的自旋玻璃有序

Quenched-Vacancy Induced Spin-Glass Order

Gül Gülpınar, A. Nihat Berker

摘要:

铁磁相的伊辛模型在d=3,与任何数量的淬火反铁磁键的随机性,示出进行充分的淬火键稀释下的自旋玻璃相的过渡。这个一般性的结果,在这里展示了数值精确的重正化组的解决方案的d=3的分级晶格,预计将保持真实的一般,立方晶格和淬火网站稀释。相反,在铁磁-自旋玻璃-反铁磁相图中,自旋玻璃相在淬灭稀释下膨胀,而铁磁和反铁磁相则受到影响。在铁spingglass相变诱导淬火稀释重入被认为是,如先前发现的铁spingglass转变诱导增加反铁磁键浓度。

英文摘要:

The ferromagnetic phase of an Ising model in d=3, with any amount of quenched antiferromagnetic bond randomness, is shown to undergo a transition to a spin-glass phase under sufficient quenched bond dilution. This general result, demonstrated here with the numerically exact renormalization-group solution of a d=3 hierarchical lattice, is expected to hold true generally, for the cubic lattice and for quenched site dilution. Conversely, in the ferromagnetic-spinglass-antiferromagnetic phase diagram, the spin-glass phase expands under quenched dilution at the expense of the ferromagnetic and antiferromagnetic phases. In the ferro-spinglass phase transition induced by quenched dilution reentrance is seen, as previously found for the ferro-spinglass transition induced by increasing the antiferromagnetic bond concentration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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