...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review letters >Topological Characterization of Classical Waves: The Topological Origin of Magnetostatic Surface Spin Waves
【24h】

Topological Characterization of Classical Waves: The Topological Origin of Magnetostatic Surface Spin Waves

机译：古典波的拓扑表征：静磁表面旋转波的拓扑起源

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We propose a topological characterization of Hamiltonians describing classical waves. Applying it to the magnetostatic surface spin waves that are important in spintronics applications, we settle the speculation over their topological origin. For a class of classical systems that includes spin waves driven by dipole-dipole interactions, we show that the topology is characterized by vortex lines in the Brillouin zone in such a way that the symplectic structure of Hamiltonian mechanics plays an essential role. We define winding numbers around these vortex lines and identify them to be the bulk topological invariants for a class of semimetals. Exploiting the bulk-edge correspondence appropriately reformulated for these classical waves, we predict that surface modes appear but not in a gap of the bulk frequency spectrum. This feature, consistent with the magnetostatic surface spin waves, indicates a broader realm of topological phases of matter beyond spectrally gapped ones.
机译：我们提出了描述古典波浪的哈密顿人的拓扑表征。将其施加到炼金石应用中很重要的磁化表面旋转波，我们通过拓扑起源来解决猜测。对于一类包括由偶极偶极交互驱动的旋转波的古典系统，我们表明拓扑结构的特征在于布里渊区的涡旋线，使得哈密顿力学的辛结构起着重要作用。我们在这些涡旋线上定义绕组数量，并将其识别为一类半塑料的散装拓扑不变。利用对这些古典波的适当重新设计的散装边缘对应，我们预测表面模式出现但不在批量频谱的间隙中。该特征与磁化表面自旋波一致，表示超越谱门的物质拓扑相位阶段的更宽领域。

著录项

  • 来源
    《Physical review letters》 |2019年第21期|217201.1-217201.5|共5页
  • 作者

    Yamamoto Kei; Thiang Guo Chuan; Pirro Philipp; Kim Kyoung-Whan; Everschor-Sitte Karin; Saitoh Eiji;

  • 作者单位

    Japan Atom Energy Agcy Adv Sci Res Ctr Tokai Ibaraki 3191195 Japan|Johannes Gutenberg Univ Mainz Inst Phys D-55128 Mainz Germany;

    Univ Adelaide Sch Math Sci Adelaide SA 5000 Australia;

    Tech Univ Kaiserslautern Fachbereich Phys D-67663 Kaiserslautern Germany|Tech Univ Kaiserslautern Landesforschungszentrum OPTIMAS D-67663 Kaiserslautern Germany;

    Johannes Gutenberg Univ Mainz Inst Phys D-55128 Mainz Germany|Korea Inst Sci & Technol Ctr Spintron Seoul 02792 South Korea;

    Johannes Gutenberg Univ Mainz Inst Phys D-55128 Mainz Germany;

    Japan Atom Energy Agcy Adv Sci Res Ctr Tokai Ibaraki 3191195 Japan|Univ Tokyo Dept Appl Phys Tokyo 1138656 Japan|Tohoku Univ Inst Mat Res Sendai Miyagi 9808577 Japan;

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

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号