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arXiv 1909.07302cond-mat.mes-hall
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人工自旋冰的模态挫挫和周期性破缺

Modal frustration and periodicity breaking in artificial spin ice

R. Puttock, A. Manzin, V. Neu, F. Garcia Sanchez, A. Fernandez Scarioni, H. W. Schumacher, O. Kazakova

摘要:

在这里,一个人工自旋冰(ASI)晶格的介绍,表现出独特的伊辛和非伊辛行为下的特定的场切换协议,因为耦合纳米磁体的单元格中包含。在伊辛制度,磁开关机制,产生一个单或双峰分布的状态依赖于该领域的对齐证明相对于晶格晶胞。此外,通过磁力显微镜和微磁建模的一种方法,用于产生大量的随机分布的能量状态的晶格,包括伊辛和朗道状态,调查。我们表明,分散的能量分布在整个晶格的内在设计的结果,并可以通过控制临界场的入射角进行微调。本手稿探讨了一个复杂的挫折环境以外的16顶点伊辛模型的发展,新的逻辑为基础的技术。

英文摘要:

Here an artificial spin ice (ASI) lattice is introduced that exhibits unique Ising and non-Ising behavior under specific field switching protocols because of the inclusion of coupled nanomagnets into the unit cell. In the Ising regime, a magnetic switching mechanism that generates a uni- or bimodal distribution of states dependent on the alignment of the field is demonstrated with respect to the lattice unit cell. In addition, a method for generating a plethora of randomly distributed energy states across the lattice, consisting of Ising and Landau states, is investigated through magnetic force microscopy and micromagnetic modeling. We demonstrate that the dispersed energy distribution across the lattice is a result of the intrinsic design and can be finely tuned through control of the incident angle of a critical field. The present manuscript explores a complex frustrated environment beyond the 16-vertex Ising model for the development of novel logic-based technologies.

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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