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首页> 外文期刊>Advanced Functional Materials >Direct Observation of Worm-Like Nanochannels and Emergent Magnon Motifs in Artificial Ferromagnetic Quasicrystals
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Direct Observation of Worm-Like Nanochannels and Emergent Magnon Motifs in Artificial Ferromagnetic Quasicrystals

机译：直接观察蠕虫的纳米南京和突出的人工铁磁性拟旋属植物

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摘要

Quasicrystalline structures and aperiodic metamaterials find applications ranging from established consumer gadgets to potential high-tech photonic components owing to both complex arrangements of constituents and exotic rotational symmetries. Magnonics is an evolving branch of magnetism research where information is transported via magnetization oscillations (magnons). Their control and manipulation are so far best accomplished in periodic metamaterials which exhibit properties artificially modulated on the nanoscale. They give rise to functional components, such as band stop filters, magnonic transistors and nanograting couplers. Here, spin-wave excitations in artificial ferromagnetic quasicrystals created via aperiodic arrangement of nanoholes are studied experimentally. Their ten-fold rotational symmetry results in multiplexed magnonic nanochannels, suggesting a width down to 50 nm inside a so-called Conway worm. Key elements of design are emergent magnon motifs and the worm-like features which are scale-invariant and not present in the periodic metamaterials. By imaging wavefronts in quasicrystals, insight is gained into how the discovered features materialize as a dense wavelength division multiplexer.
机译：拟晶结构和非周期性超材料发现，由于成分和异国旋转对称的复杂布置，所以由于构成和异国情调的旋转对称的复杂布置，所以应用于巨大的消费者小工具到潜在的高科技光子组件。 MAGNONICS是磁性研究的不断变化的分支，其中信息通过磁化振荡（MAGGONS）传送信息。他们的控制和操纵到目前为止，在周期性的超材料中最佳地完成，其在纳米级上表现出人工地调节的性质。它们产生功能部件，例如带止挡滤波器，延长晶体管和纳入纳入耦合器。这里，通过实验研究通过纳米孔的非周期性排列产生的人造铁磁拟旋转族旋转波激发。它们的十倍旋转对称导致多路复用的磁性纳米纳米，表明在所谓的康威蠕虫内部宽到50nm。设计的关键要素是突出的Magnon主题和蠕虫状特征，这些特征是不变的，并且不存在于周期性的超材料中。通过在拟Crystals中成像波前，可以获得发现的特征如何实现为密集波分复用器的洞察力。

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  • 来源
    《Advanced Functional Materials》 |2020年第36期|2001388.1-2001388.10|共10页
  • 作者

    Watanabe Sho; Bhat Vinayak S.; Baumgaertl Korbinian; Grundler Dirk;

  • 作者单位

    Ecole Polytech Fed Lausanne Inst Mat Lab Nanoscale Magnet Mat & Magnon Sch Engn CH-1015 Lausanne Switzerland;

    Ecole Polytech Fed Lausanne Inst Mat Lab Nanoscale Magnet Mat & Magnon Sch Engn CH-1015 Lausanne Switzerland;

    Ecole Polytech Fed Lausanne Inst Mat Lab Nanoscale Magnet Mat & Magnon Sch Engn CH-1015 Lausanne Switzerland;

    Ecole Polytech Fed Lausanne Inst Mat Lab Nanoscale Magnet Mat & Magnon Sch Engn CH-1015 Lausanne Switzerland|Ecole Polytech Fed Lausanne Inst Microengn Sch Engn CH-1015 Lausanne Switzerland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    magnonics; metamaterials; nanomagnets; quasicrystals; spin waves;

    机译：MAGINONICS;超材料;纳米磁带;拟CSRYSTALS;旋转波浪;

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