https://scholars.lib.ntu.edu.tw/handle/123456789/573456
標題: | Higher-Order Weyl Semimetals | 作者: | Wang H.-X., Lin Z.-K., Jiang B., Guo G.-Y., Jiang J.-H. GUANG-YU GUO |
關鍵字: | Hinges; Chiral anomaly; Chiral material; Fermi arcs; Higher-order; Intermediate phase; Momentum-dependent; Tetragonal crystals; Topological phasis; Topology; article; chirality; theoretical study | 公開日期: | 2020 | 卷: | 125 | 期: | 14 | 來源出版物: | Physical Review Letters | 摘要: | Higher-order topology yields intriguing multidimensional topological phenomena, while Weyl semimetals have unconventional properties such as chiral anomaly. However, so far, Weyl physics remain disconnected with higher-order topology. Here, we report the theoretical discovery of higher-order Weyl semimetals and thereby the establishment of such an important connection. We demonstrate that higher-order Weyl semimetals can emerge in chiral materials such as chiral tetragonal crystals as the intermediate phase between the conventional Weyl semimetal and 3D higher-order topological phases. Higher-order Weyl semimetals manifest themselves uniquely by exhibiting concurrent chiral Fermi-arc surface states, topological hinge states, and the momentum-dependent fractional hinge charge, revealing a novel class of higher-order topological phases. ? 2020 American Physical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85093358779&doi=10.1103%2fPhysRevLett.125.146401&partnerID=40&md5=9708956f575717180b49c4425dbc2139 https://scholars.lib.ntu.edu.tw/handle/123456789/573456 |
ISSN: | 319007 | DOI: | 10.1103/PhysRevLett.125.146401 |
顯示於: | 物理學系 |
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