Two-dimensional topological semimetals

X Feng, J Zhu, W Wu, SA Yang - Chinese Physics B, 2021 - iopscience.iop.org
The field of two-dimensional topological semimetals, which emerged at the intersection of
two-dimensional materials and topological materials, has been rapidly develo** in recent …

Hourglass charge-three Weyl phonons

X Wang, F Zhou, Z Zhang, ZM Yu, Y Yao - Physical Review B, 2022 - APS
The unconventional Weyl point with nonlinear dispersion features higher topological charge|
C|> 1 and multiple topologically protected Fermi arc states at its boundary. As a novel …

Investigation of nodal line spin-gapless semiconductors using first-principles calculations

G Ding, J Wang, H Chen, X Zhang… - Journal of Materials …, 2022 - pubs.rsc.org
Nodal line spin-gapless semiconductors (NLSGSs) are a new type of topological spintronic
material with a possible high Curie temperature, 100% spin polarization, high carrier …

Two-dimensional Weyl nodal-line semimetal in a ferromagnetic monolayer with a high Curie temperature

L **, X Zhang, Y Liu, X Dai, X Shen, L Wang, G Liu - Physical Review B, 2020 - APS
Nodal-line semimetals in two-dimensional (2D) materials have attracted intense attention
recently. From fundamental physics and spintronic application points of view, high Curie …

Ferromagnetic hybrid nodal loop and switchable type-I and type-II Weyl fermions in two dimensions

T He, X Zhang, Y Liu, X Dai, G Liu, ZM Yu, Y Yao - Physical Review B, 2020 - APS
As a novel type of fermionic state, the hybrid nodal loop with the coexistence of both type-I
and type-II band crossings has attracted intense research interest. However, it remains a …

Dirac fermions in antiferromagnetic FeSn kagome lattices with combined space inversion and time-reversal symmetry

Z Lin, C Wang, P Wang, S Yi, L Li, Q Zhang, Y Wang… - Physical Review B, 2020 - APS
Symmetry principles play a critical role in formulating the fundamental laws of nature, with a
large number of symmetry-protected topological states identified in recent studies of …

Topological semimetal driven by strong correlations and crystalline symmetry

L Chen, C Setty, H Hu, MG Vergniory, SE Grefe… - Nature Physics, 2022 - nature.com
Electron correlations amplify quantum fluctuations and, as such, are recognized as the origin
of many quantum phases. However, whether strong correlations can lead to gapless …

Two-dimensional Weyl half-semimetal and tunable quantum anomalous Hall effect

JY You, C Chen, Z Zhang, XL Sheng, SA Yang, G Su - Physical Review B, 2019 - APS
Topological states of matter and two-dimensional (2D) magnetism are two fascinating topics
attracting tremendous interest in current research. In this work, we explore their interplay in a …

Unconventional superconductivity in topological Kramers nodal-line semimetals

T Shang, J Zhao, LH Hu, J Ma, DJ Gawryluk, X Zhu… - Science …, 2022 - science.org
Crystalline symmetry is a defining factor of the electronic band topology in solids, where
many-body interactions often induce a spontaneous breaking of symmetry. Superconductors …

Coexistence of zero-, one-, and two-dimensional degeneracy in tetragonal phonons

J Wang, H Yuan, M Kuang, T Yang, ZM Yu, Z Zhang… - Physical Review B, 2021 - APS
Based on the dimension of degeneracy, topological electronic systems can roughly be
divided into three parts: nodal point, line, and surface materials corresponding to zero-, one …