Weyl and Dirac semimetals in three-dimensional solids

NP Armitage, EJ Mele, A Vishwanath - Reviews of Modern Physics, 2018 - APS
Weyl and Dirac semimetals are three-dimensional phases of matter with gapless electronic
excitations that are protected by topology and symmetry. As three-dimensional analogs of …

Classification of topological quantum matter with symmetries

CK Chiu, JCY Teo, AP Schnyder, S Ryu - Reviews of Modern Physics, 2016 - APS
Topological materials have become the focus of intense research in recent years, since they
exhibit fundamentally new physical phenomena with potential applications for novel devices …

Magnetic Weyl semimetal phase in a Kagomé crystal

DF Liu, AJ Liang, EK Liu, QN Xu, YW Li, C Chen, D Pei… - Science, 2019 - science.org
Weyl semimetals are crystalline solids that host emergent relativistic Weyl fermions and
have characteristic surface Fermi-arcs in their electronic structure. Weyl semimetals with …

Electrical manipulation of a topological antiferromagnetic state

H Tsai, T Higo, K Kondou, T Nomoto, A Sakai… - Nature, 2020 - nature.com
Electrical manipulation of phenomena generated by nontrivial band topology is essential for
the development of next-generation technology using topological protection. A Weyl …

Axion electrodynamics in topological materials

A Sekine, K Nomura - Journal of Applied Physics, 2021 - pubs.aip.org
One of the intriguing properties characteristic to three-dimensional topological materials is
the topological magnetoelectric phenomena arising from a topological term called the θ …

Type-ii weyl semimetals

AA Soluyanov, D Gresch, Z Wang, QS Wu, M Troyer… - Nature, 2015 - nature.com
Fermions—elementary particles such as electrons—are classified as Dirac, Majorana or
Weyl. Majorana and Weyl fermions had not been observed experimentally until the recent …

Experimental discovery of Weyl semimetal TaAs

BQ Lv, HM Weng, BB Fu, XP Wang, H Miao, J Ma… - Physical Review X, 2015 - APS
Weyl semimetals are a class of materials that can be regarded as three-dimensional
analogs of graphene upon breaking time-reversal or inversion symmetry. Electrons in a …

A Weyl Fermion semimetal with surface Fermi arcs in the transition metal monopnictide TaAs class

SM Huang, SY Xu, I Belopolski, CC Lee… - Nature …, 2015 - nature.com
Weyl fermions are massless chiral fermions that play an important role in quantum field
theory but have never been observed as fundamental particles. A Weyl semimetal is an …

Discovery of a Weyl fermion state with Fermi arcs in niobium arsenide

SY Xu, N Alidoust, I Belopolski, Z Yuan, G Bian… - Nature Physics, 2015 - nature.com
Three types of fermions play a fundamental role in our understanding of nature: Dirac,
Majorana and Weyl. Whereas Dirac fermions have been known for decades, the latter two …

Weyl semimetal phase in the non-centrosymmetric compound TaAs

LX Yang, ZK Liu, Y Sun, H Peng, HF Yang, T Zhang… - Nature physics, 2015 - nature.com
Abstract Three-dimensional (3D) topologicalWeyl semimetals (TWSs) represent a state of
quantum matter with unusual electronic structures that resemble both a '3D graphene'and a …