Symmetry-enforced three-dimensional Dirac phononic crystals

Xiangxi Cai; Liping Ye; Chunyin Qiu; Meng Xiao; Rui Yu; Manzhu Ke; Zhengyou Liu

doi:10.1038/s41377-020-0273-4

Go to Nature Website

Your Location：

Home >

Browse articles >

Symmetry-enforced three-dimensional Dirac phononic crystals

Letters

- Symmetry-enforced three-dimensional Dirac phononic crystals
- Symmetry-enforced three-dimensional Dirac phononic crystals
- LSA 2020年9卷第3期页码：485-490
- Affiliations：
  
  1.Key Laboratory of Artificial Micro-Structures and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, 430072 Wuhan, China
  2.Institute for Advanced Studies, Wuhan University, 430072 Wuhan, China
- Author bio：
  
  Liping Ye (lpye@whu.edu.cn)
  Zhengyou Liu (zyliu@whu.edu.cn)
- Funds：
- DOI：10.1038/s41377-020-0273-4
  中图分类号：
- 纸质出版日期：2020，
  
  网络出版日期：2020-03-10，
  
  收稿日期：2019-10-16，
  
  修回日期：2020-02-15，
  
  录用日期：2020-02-24
- Accepted：
Scan QR Code
Symmetry-enforced three-dimensional Dirac phononic crystals[J]. LSA, 2020,9(3):485-490.

Cai, X. X. et al. Symmetry-enforced three-dimensional Dirac phononic crystals. Light: Science & Applications, 9, 485-490 (2020).
Symmetry-enforced three-dimensional Dirac phononic crystals[J]. LSA, 2020,9(3):485-490. DOI： 10.1038/s41377-020-0273-4.

Cai, X. X. et al. Symmetry-enforced three-dimensional Dirac phononic crystals. Light: Science & Applications, 9, 485-490 (2020). DOI： 10.1038/s41377-020-0273-4.

摘要

Abstract

Dirac semimetals

the materials featuring fourfold degenerate Dirac points

are critical states of topologically distinct phases. Such gapless topological states have been accomplished by a band-inversion mechanism

in which the Dirac points can be annihilated pairwise by perturbations without changing the symmetry of the system. Here

we report an experimental observation of Dirac points that are enforced completely by the crystal symmetry using a nonsymmorphic three-dimensional phononic crystal. Intriguingly

our Dirac phononic crystal hosts four spiral topological surface states

in which the surface states of opposite helicities intersect gaplessly along certain momentum lines

as confirmed by additional surface measurements. The novel Dirac system may release new opportunities for studying elusive (pseudo) and offer a unique prototype platform for acoustic applications.

关键词

Keywords

references

Hasan, M. Z.&Kane, C. L.Colloquium: topological insulators.Rev. Mod. Phys.82, 3045–3067 (2010)..

Qi, X. L.&Zhang, S. C. Topological insulators and superconductors.Rev. Mod. Phys.83, 1057–1110 (2011)..

Yang, B. J.&Nagaosa, N. Classification of stable three-dimensional Dirac semimetals with nontrivial topology.Nat. Commun.5, 4898 (2014)..

Armitage, N. P., Mele, E. J.&Vishwanath, A. Weyl and Dirac semimetals in three-dimensional solids.Rev. Mod. Phys.90, 015001 (2018)..

Wang, Z. J. et al. Dirac semimetal and topological phase transitions inA3Bi (A=Na, K, Rb).Phys. Rev. B85, 195320 (2012)..

Wang, Z. J. et al. Three-dimensional Dirac semimetal and quantum transport in Cd3As2.Phys. Rev. B88, 125427 (2013)..

Liu, Z. K. et al. Discovery of a three-dimensional topological dirac semimetal, Na3Bi.Science343, 864–867 (2014)..

Xu, S. Y. et al. Observation of Fermi arc surface states in a topological metal.Science347, 294–298 (2015)..

Neupane, M. et al. Observation of a three-dimensional topological Dirac semimetal phase in high-mobility Cd3As2.Nat. Commun.5, 3786 (2014)..

Liu, Z. K. et al. A stable three-dimensional topological Dirac semimetal Cd3As2.Nat. Mater.13, 677–681 (2014)..

Young, S. M. et al. Dirac semimetal in three dimensions.Phys. Rev. Lett.108, 140405 (2012)..

Steinberg, J. A. et al. Bulk dirac points in distorted spinels.Phys. Rev. Lett.112, 036403 (2014)..

Fang, C. et al. Topological semimetals with helicoid surface states.Nat. Phys.12, 936–941 (2016)..

Abrikosov, A. A. Quantum magnetoresistance.Phys. Rev. B58, 2788–2794 (1998)..

Liang, T. et al. Ultrahigh mobility and giant magnetoresistance in the Dirac semimetal Cd3As2.Nat. Mater.14, 280–284 (2015)..

Xu, S. Y. et al. Topological phase transition and texture inversion in a tunable topological insulator.Science332, 560–564 (2011)..

Sato, T. et al. Unexpected mass acquisition of Dirac fermions at the quantum phase transition of a topological insulator.Nat. Phys.7, 840–844 (2011)..

Ozawa, T. et al. Topological photonics.Rev. Mod. Phys.91, 015006 (2019)..

Ma, G. C., Xiao, M.&Chan, C. T. Topological phases in acoustic and mechanical systems.Nat. Rev. Phys.1, 281–294 (2019)..

Rechtsman, M. C. et al. Photonic Floquet topological insulators.Nature496, 196–200 (2013)..

Lu, L. et al. Experimental observation of Weyl points.Science349, 622–624 (2015)..

Lu, L. et al. Symmetry-protected topological photonic crystal in three dimensions.Nat. Phys.12, 337–340 (2016)..

Wang, H. X. et al. Three-dimensional photonic Dirac points stabilized by point group symmetry.Phys. Rev. B93, 235155 (2016)..

Slobozhanyuk, A. et al. Three-dimensional all-dielectric photonic topological insulator.Nat. Photon.11, 130–136 (2017)..

Barik, S. et al. A topological quantum optics interface.Science359, 666–668 (2018)..

Yang, Y. H. et al. Realization of a three-dimensional photonic topological insulator.Nature565, 622–626 (2019)..

Yang, B. et al. Ideal Weyl points and helicoid surface states in artificial photonic crystal structures.Science359, 1013–1016 (2018)..

Guo, Q. H. et al. Observation of three-dimensional photonic dirac points and spin-polarized surface arcs.Phys. Rev. Lett.122, 203903 (2019)..

Xiao, M. et al. Synthetic gauge flux and Weyl points in acoustic systems.Nat. Phys.11, 920–924 (2015)..

Serra-Garcia, M. et al. Observation of a phononic quadrupole topological insulator.Nature555, 342–345 (2018)..

He, H. L. et al. Topological negative refraction of surface acoustic waves in a Weyl phononic crystal.Nature560, 61–64 (2018)..

Cha, J., Kim, K. W.&Daraio, C. Experimental realization of on-chip topological nanoelectromechanical metamaterials.Nature564, 229–233 (2018)..

He, C. et al. Three-dimensional topological acoustic crystals with pseudospin-valley coupled saddle surface states.Nat. Commun.9, 4555 (2018)..

Yang, Y. H. et al. Topological triply degenerate point with double Fermi arcs.Nat. Phys.15, 645–649 (2019)..

Wan, X. G. et al. Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates.Phys. Rev. B83, 205101 (2011)..

Kargarian, M. et al. Are the surface Fermi arcs in Dirac semimetals topologically protected?Proc. Natl Acad. Sci. USA113, 8648–8652 (2016)..

Deng, W. Y. et al. Nodal rings and drumhead surface states in phononic crystals.Nat. Commun.10, 1769 (2019)..

Qiu, H. H. et al. Straight nodal lines and waterslide surface states observed in acoustic metacrystals.Phys. Rev. B100, 041303(R) (2019)..

浏览量

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

暂无数据