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arXiv 2602.23362cond-mat.str-elcond-mat.stat-mech
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无杂音弛豫在无杂音的库仑自旋液中的表现

Arrested Relaxation in a Disorder-Free Coulomb Spin Liquid

International Centre for Theoretical Sciences, Tata Institute of Fundamental Research(国际理论科学中心,塔塔基础研究院);School of Physics, Georgia Institute of Technology(佐治亚理工学院物理学院);Max-Planck-Institut für Physik komplexer Systeme(马克斯·普朗克复杂系统物理研究所)

Souvik Kundu, Arnab Seth, Sthitadhi Roy, Subhro Bhattacharjee, Roderich Moessner

AI总结:

该研究揭示了自旋-3/2冰中新型库仑自旋液体和动力学停滞现象,通过无杂音短程相互作用系统实现。

摘要:

我们研究了经典自旋-3/2冰中的库仑自旋液体,并发现扩展的局域态空间导致了一种新的此类相。除了传统自旋-1/2冰中的单极子外,系统还包含额外的低能晶场激发,其与单极子的相互作用显著改变了平衡和非平衡性质。在热淬火后,我们发现了一种明显的动力学停滞,表现为自旋自相关函数中指数长寿命的非热平板。这构成了无杂音短程相互作用系统中动力学停滞的罕见例子。我们证明,停滞的动力学源于自旋-3/2冰特有的新型复合激发结构以及需要活化过程的动能受限松弛路径。我们的结果确立了高自旋冰作为实现非常规库仑自旋液体和动力学停滞而不依赖淬火杂音的肥沃平台。

英文摘要:

We investigate Coulomb spin liquids in classical spin-3/2 ice and show that the enlarged on-site Hilbert space gives rise to a qualitatively new class of such phases. Beyond the conventional magnetic monopoles of spin-1/2 ice, the system hosts additional low-energy crystal-field excitations, whose interplay with monopoles significantly modifies both equilibrium and non-equilibrium properties. Following a thermal quench, we find a pronounced dynamical arrest manifested in an exponentially long-lived {athermal} plateau in spin autocorrelations. This constitutes a rare example of dynamical arrest in a short-range interacting, disorder-free system. We demonstrate that the arrested dynamics originate from novel composite excitation structures unique to spin-3/2 ice and from kinetically constrained relaxation pathways that require activated processes. Our results establish higher-spin ice as a fertile platform for realising unconventional Coulomb spin liquids and dynamical arrest without quenched disorder.

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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