arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2606.02439cond-mat.soft
收藏

各向异性相互作用导致人工胶体冰中的动力学停滞

Anisotropic interactions induce dynamical arrest in artificial colloidal ice

Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias(蒙特雷理工学院,工程与科学学院)

Leonardo G. Alanis-Cantú, Antonio Ortiz-Ambriz

AI总结:

通过面内磁场诱导各向异性相互作用,使人工胶体冰系统无法达到棋盘格基态,而是停滞在亚稳态无序态,这是由于势垒的局部磁增强所致。

摘要:

人工胶体冰是一种类似冰的系统,用于研究在受控环境中阻挫效应的影响,其中所有自由度都可以在足够大的长度尺度上进行光学可视化并实时访问。我们通过面内磁场诱导各向异性相互作用来修改这个模型系统。在这个新体系中,系统具有一个由完全带电顶点的棋盘格图案组成的明确基态。然而,布朗动力学模拟无法达到这个基态,而是冻结在亚稳态无序态中,即使晶格中没有淬火无序。这种停滞是由粒子需要跨越以寻找更低能量状态的势垒的局部磁增强引起的。

英文摘要:

Artificial Colloidal Ice is an ice-like system used to study the effects of frustration in controlled environments where all degrees of freedom can be accessed at a length-scale large enough for optical visualization and in real time. We modify this model system by inducing anisotropic interactions through an in-plane magnetic field. In this new regime, the system has a well-defined ground state consisting of a checkerboard pattern of fully charged vertices. However, Brownian Dynamics simulations are unable to reach this ground state and instead remain frozen in metastable disordered states, even in the absence of quenched disorder in the lattice. This arrest is caused by the local magnetic enhancement of the potential barrier that the particles need to cross to find a lower energy state.

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。

↑