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Relationship between relaxation time and diffusion of magnetized two-dimensional Yukawa liquids

机译:磁化二维浴川液磁化时间与扩散的关系

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摘要

Structural relaxation and self-diffusion of magnetized two-dimensional (2D) Yukawa liquids are investigated using Langevin dynamical simulations. The structural relaxation time tau(alpha) is obtained from the self-intermediate scattering function, while the self-diffusion coefficient D is calculated from the mean-squared displacement. It is discovered that, for the magnetized 2D Yukawa liquids with the coupling parameter of Gamma, the relationship between tau(alpha) and D can be expressed as D proportional to (1/tau(alpha)Gamma)(xi) with two distinct values of the exponent xi at low and high temperatures, respectively. At low temperatures, the exponent xi decreases with the applied magnetic field, which is attributed to the dynamical heterogeneity caused by the magnetic field. At high temperatures, it is found that both D and tau(alpha)Gamma obey the Arrhenius behaviors, reasonably leading to the discovered D proportional to (1/tau(alpha)Gamma)(xi) relationship.
机译:使用Langevin动态模拟研究了磁化二维(2D)浴川液的结构松弛和自扩散。 从自我中间散射功能获得结构松弛时间tau(alpha),而自扩散系数d由平均平均位移计算。 被发现,对于具有伽马偶联参数的磁化2D yukawa液体,TAU(α)和D之间的关系可以表达为与(1 / Tau(alpha)γ)(xi)的d比例,具有两个不同的值 在低温和高温下的指数Xi。 在低温下,指数Xi随施加的磁场减少,施加的磁场归因于由磁场引起的动态异质性。 在高温下,发现D和Tau(alpha)伽玛遵守阿列尼乌斯行为,合理地导致发现的D比例(1 / Tau(α)γ)(xi)关系。

著录项

  • 来源
    《Physics of plasmas》 |2019年第5期|共7页
  • 作者

    Lu Shaoyu; Wang Kang; Feng Yan;

  • 作者单位

    Soochow Univ Coll Phys Sci &

    Technol Ctr Soft Condensed Matter Phys &

    Interdisciplinar Suzhou 215006 Peoples R China;

    Soochow Univ Coll Phys Sci &

    Technol Ctr Soft Condensed Matter Phys &

    Interdisciplinar Suzhou 215006 Peoples R China;

    Soochow Univ Coll Phys Sci &

    Technol Ctr Soft Condensed Matter Phys &

    Interdisciplinar Suzhou 215006 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 等离子体物理学;
  • 关键词

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