Tunable Weyl Points in Periodically Driven Nodal Line Semimetals

Zhongbo Yan and Zhong Wang
Phys. Rev. Lett. 117, 087402 – Published 17 August 2016
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Abstract

Weyl semimetals and nodal line semimetals are characterized by linear band touching at zero-dimensional points and one-dimensional lines, respectively. We predict that a circularly polarized light drives nodal line semimetals into Weyl semimetals. The Floquet Weyl points thus obtained are tunable by the incident light, which enables investigations of them in a highly controllable manner. The transition from nodal line semimetals to Weyl semimetals is accompanied by the emergence of a large and tunable anomalous Hall conductivity. Our predictions are experimentally testable by transport measurement in film samples or by pump-probe angle-resolved photoemission spectroscopy.

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  • Received 14 May 2016

DOI:https://doi.org/10.1103/PhysRevLett.117.087402

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Zhongbo Yan1,* and Zhong Wang1,2,†

  • 1Institute for Advanced Study, Tsinghua University, Beijing 100084, China
  • 2Collaborative Innovation Center of Quantum Matter, Beijing 100871, China

  • *yzhbo@mail.tsinghua.edu.cn
  • wangzhongemail@tsinghua.edu.cn

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Issue

Vol. 117, Iss. 8 — 19 August 2016

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