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arXiv 1302.5897cond-mat.softcond-mat.mes-hall
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Phase diagram,适用于零磁场下的单个灵活Stockmayer polymer

Phase diagram for a single flexible Stockmayer polymer at zero field

Joan J. Cerdà, Pedro A. Sánchez, Christian Holm, Tomàs Sintes

摘要:

通过Langevin动力学模拟,对由一系列具有短程Lennard-Jones吸引力相互作用的磁性胶体纳米颗粒(Stockmayer聚合物)组成的柔性永磁链的平衡构象进行了深入分析。本文给出了一个长度为$N=100$的链的初步相图。与非磁性链相比,相图显示出几种不寻常的构象相。这些相的特征在于很大程度的构象各向异性,并由闭合链,螺旋状状态,部分塌陷状态,和非常紧凑的无序状态。相图包含几个有趣的特征,如至少存在两个“三相点”。

英文摘要:

The equilibrium conformations of a flexible permanent magnetic chain that consists of a sequence of linked magnetic colloidal nanoparticles with short-ranged Lennard-Jones attractive interactions (Stockmayer polymer) are thoroughly analysed via Langevin dynamics simulations. A tentative phase diagram is presented for a chain of length $N=100$. The phase diagram exhibits several unusual conformational phases when compared with the non-magnetic chains. These phases are characterised by a large degree of conformational anisotropy, and consist of closed chains, helicoidal-like states, partially collapsed states, and very compact disordered states. The phase diagram contains several interesting features like the existence of at least two 'triple points'.

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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