Bypassing Dynamical Freezing in Artificial Kagome Ice.,Physical Review Letters

当前位置： X-MOL 学术 › Phys. Rev. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Bypassing Dynamical Freezing in Artificial Kagome Ice.
Physical Review Letters ( IF 8.1 ) Pub Date : 2020-07-31 , DOI: 10.1103/physrevlett.125.057203
V Schánilec _{1,

2} , B Canals ₁ , V Uhlíř ₂ , L Flajšman ₂ , J Sadílek ₂ , T Šikola _{2,

3} , N Rougemaille ₁

Affiliation

Spin liquids are correlated, disordered states of matter that fluctuate even at low temperatures. Experimentally, the extensive degeneracy characterizing their low-energy manifold is expected to be lifted, for example, because of dipolar interactions, leading to an ordered ground state at absolute zero. However, this is not what is usually observed, and many systems, whether they are chemically synthesized or nanofabricated, dynamically freeze before magnetic ordering sets in. In artificial realizations of highly frustrated magnets, ground state configurations, and even low-energy manifolds, thus remain out of reach for practical reasons. Here, we show how dynamical freezing can be bypassed in an artificial kagome ice. We illustrate the efficiency of our method by demonstrating that the a priori dynamically inaccessible ordered ground state and fragmented spin liquid configurations can be obtained reproducibly, imaged in real space at room temperature, and studied conveniently. We then identify the mechanism by which dynamical freezing occurs in the dipolar kagome ice.

中文翻译：

在人造Kagome冰中绕过动态冻结。

自旋液体是相关的无序状态，即使在低温下也会发生波动。在实验中，例如由于偶极相互作用，有望消除表征其低能歧管的广泛简并性，从而导致有序基态为绝对零。但是，通常情况并非如此，许多系统，无论是化学合成还是纳米加工的系统，在磁排序开始之前都会动态冻结。在高度挫败的磁体，基态配置甚至是低能歧管的人工实现中，因此出于实际原因，保持遥不可及。在这里，我们展示了如何在人造kagome冰中绕过动态冻结。我们通过证明先验来说明我们方法的效率可以重现获得动态不可访问的有序基态和碎片化的自旋液体构型，在室温下在真实空间中成像，并且方便研究。然后，我们确定偶极子裙果冰中发生动态冻结的机制。

更新日期：2020-07-31

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11