Crystallizing Kagome Artificial Spin 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.)

Crystallizing Kagome Artificial Spin Ice
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-07-29 , DOI: 10.1103/physrevlett.129.057202
Wen-Cheng Yue _{1,

2} , Zixiong Yuan _{1,

2} , Yang-Yang Lyu ₁ , Sining Dong ₁ , Jian Zhou ₂ , Zhi-Li Xiao _{3,

4} , Liang He ₂ , Xuecou Tu _{1,

5} , Ying Dong ₆ , Huabing Wang _{1,

5} , Weiwei Xu ₁ , Lin Kang _{1,

5} , Peiheng Wu _{1,

5} , Cristiano Nisoli ₇ , Wai-Kwong Kwok ₃ , Yong-Lei Wang _{1,

2,

5}

Affiliation

Artificial spin ices are engineered arrays of dipolarly coupled nanobar magnets. They enable direct investigations of fascinating collective phenomena from their diverse microstates. However, experimental access to ground states in the geometrically frustrated systems has proven difficult, limiting studies and applications of novel properties and functionalities from the low energy states. Here, we introduce a convenient approach to control the competing diploar interactions between the neighboring nanomagnets, allowing us to tailor the vertex degeneracy of the ground states. We achieve this by tuning the length of selected nanobar magnets in the spin ice lattice. We demonstrate the effectiveness of our method by realizing multiple low energy microstates in a kagome artificial spin ice, particularly the hardly accessible long range ordered ground state—the spin crystal state. Our strategy can be directly applied to other artificial spin systems to achieve exotic phases and explore new emergent collective behaviors.

中文翻译：

Kagome人工自旋冰结晶

人造自旋冰是偶极耦合纳米棒磁体的工程阵列。它们能够从不同的微观状态直接研究迷人的集体现象。然而，在几何受挫系统中对基态的实验访问已被证明是困难的，这限制了低能态新特性和功能的研究和应用。在这里，我们介绍了一种方便的方法来控制相邻纳米磁体之间的竞争双极相互作用，从而使我们能够定制基态的顶点退化。我们通过调整自旋冰晶格中选定的纳米棒磁铁的长度来实现这一点。我们通过在kagome人造自旋冰中实现多个低能微状态来证明我们方法的有效性，特别是难以接近的长程有序基态——自旋晶态。我们的策略可以直接应用于其他人工自旋系统以实现奇异阶段并探索新的新兴集体行为。

更新日期：2022-07-29

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11