Topological nodal lines and nodal points in the antiferromagnetic material β-Fe2PO5

2019 ◽  
Vol 7 (40) ◽  
pp. 12657-12663 ◽  
Author(s):  
Tingli He ◽  
Xiaoming Zhang ◽  
Weizhen Meng ◽  
Lei Jin ◽  
Xuefang Dai ◽  
...  
Keyword(s):  
Nodal Lines ◽  
Nodal Points ◽  
Topological Semimetal

Antiferromagnetic β-Fe2PO5 is a new topological semimetal with coexisting rich fermionic states, and with the potential to be applied in topological antiferromagnetic spintronics.

scholarly journals Symmetry-protected nodal points and nodal lines in magnetic materials

2021 ◽  
Vol 103 (24) ◽  
Author(s):  
Jian Yang ◽  
Chen Fang ◽  
Zheng-Xin Liu
Keyword(s):  
Magnetic Materials ◽  
Nodal Lines ◽  
Nodal Points ◽  
Symmetry Protected

Electronic Structure Transformation in a Magnetized Topological Semimetal

2021 ◽  
Vol 1 ◽  
Keyword(s):  
Electronic Structure ◽  
Domain Walls ◽  
Magnetic Domain ◽  
Localized States ◽  
Structure Transformation ◽  
Nodal Lines ◽  
Topological Semimetal ◽  
Magnetic Domain Walls ◽  
Magnetic Orders ◽  
Topological Semimetals

We theoretically show that the nodal structures in topological semimetals, including Weyl points and nodal lines, can be switched by magnetic orders, accompanied by localized states at magnetic domain walls.

scholarly journals Dirac nodal surfaces and nodal lines in ZrSiS

2019 ◽  
Vol 5 (5) ◽  
pp. eaau6459 ◽  
Author(s):  
B.-B. Fu ◽  
C.-J. Yi ◽  
T.-T. Zhang ◽  
M. Caputo ◽  
J.-Z. Ma ◽  
...  
Keyword(s):  
Photoemission Spectroscopy ◽  
Dirac Fermions ◽  
Fermi Surfaces ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Nodal Lines ◽  
Nodal Points ◽  
Different Dimensions ◽  
Topological Semimetals ◽  
Symmetry Protected ◽  
Nodal Surfaces

Topological semimetals are characterized by symmetry-protected band crossings, which can be preserved in different dimensions in momentum space, forming zero-dimensional nodal points, one-dimensional nodal lines, or even two-dimensional nodal surfaces. Materials harboring nodal points and nodal lines have been experimentally verified, whereas experimental evidence of nodal surfaces is still lacking. Here, using angle-resolved photoemission spectroscopy (ARPES), we reveal the coexistence of Dirac nodal surfaces and nodal lines in the bulk electronic structures of ZrSiS. As compared with previous ARPES studies on ZrSiS, we obtained pure bulk states, which enable us to extract unambiguously intrinsic information of the bulk nodal surfaces and nodal lines. Our results show that the nodal lines are the only feature near the Fermi level and constitute the whole Fermi surfaces. We not only prove that the low-energy quasiparticles in ZrSiS are contributed entirely by Dirac fermions but also experimentally realize the nodal surface in topological semimetals.

Coexistence of open and closed type nodal line topological semimetals in two dimensional B2C

2018 ◽  
Vol 6 (5) ◽  
pp. 1206-1214 ◽  
Author(s):  
P. Zhou ◽  
Z. S. Ma ◽  
L. Z. Sun
Keyword(s):  
Nodal Line ◽  
Two Dimensional ◽  
Nodal Lines ◽  
Closed Type ◽  
Topological Semimetal ◽  
Topological Semimetals

The detection of open and closed type nodal lines in the bilayer topological semimetal B2C on the substrate of Cu(110).

Critical topological nodal points and nodal lines/rings in Kagome graphene

2020 ◽  
Vol 22 (16) ◽  
pp. 8713-8718
Author(s):  
Jun Zhou ◽  
Yuee Xie ◽  
Shengbai Zhang ◽  
Yuanping Chen
Keyword(s):  
Transport Phenomena ◽  
Topological Phases ◽  
Topological Properties ◽  
Many Body ◽  
Body Effect ◽  
Nodal Lines ◽  
Flat Bands ◽  
Nodal Points

Critical topological phases, possessing flat bands, provide a platform to study unique topological properties and transport phenomena under a many-body effect.

Topological Semimetal State with Triply Degenerate Nodal Points in a Stable Structure of Cu2Te

2021 ◽  
Author(s):  
Xinxin Zhao ◽  
Yiming Mi
Keyword(s):  
Solar Cells ◽  
Fermi Energy ◽  
Stable Structure ◽  
Nodal Points ◽  
Topological Semimetal

Cu$_2$Te is commonly used as backside contact of CdTe based solar cells. We predict a stable topological semimetal structure of Cu$_2$Te(R3m) with triply degenerate nodal points near Fermi energy. Triply...

Pnma metal hydride system LiBH: a superior topological semimetal with the coexistence of twofold and quadruple degenerate topological nodal lines

2020 ◽  
Vol 32 (36) ◽  
pp. 365502
Author(s):  
Feng Zhou ◽  
Guangqian Ding ◽  
Zhenxiang Cheng ◽  
Gokhan Surucu ◽  
Hong Chen ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Nodal Lines ◽  
Topological Semimetal

Observations of nodal lines in the topological semimetal ZrSnTe

2019 ◽  
Vol 63 (2) ◽  
Author(s):  
Bo Chen ◽  
Bo Zhang ◽  
JiHai Yu ◽  
FuCong Fei ◽  
Muhammad Naveed ◽  
...  
Keyword(s):  
Nodal Lines ◽  
Topological Semimetal
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