Experimental perspective on three-dimensional topological semimetals

BQ Lv, T Qian, H Ding - Reviews of Modern Physics, 2021 - APS
Topological semimetals (TSMs) are characterized by bulk band crossings in their electronic
structures, which are expected to give rise to gapless electronic excitations and topological …

Light-induced emergent phenomena in 2D materials and topological materials

C Bao, P Tang, D Sun, S Zhou - Nature Reviews Physics, 2022 - nature.com
Light–matter interaction in 2D and topological materials provides a fascinating control knob
for inducing emergent, non-equilibrium properties and achieving new functionalities in the …

Intelligent infrared sensing enabled by tunable moiré quantum geometry

C Ma, S Yuan, P Cheung, K Watanabe, T Taniguchi… - Nature, 2022 - nature.com
Quantum geometric properties of Bloch wave functions in solids, that is, Berry curvature and
the quantum metric, are known to significantly influence the ground-and excited-state …

Wannier90 as a community code: new features and applications

G Pizzi, V Vitale, R Arita, S Blügel… - Journal of Physics …, 2020 - iopscience.iop.org
W annier90 is an open-source computer program for calculating maximally-localised
Wannier functions (MLWFs) from a set of Bloch states. It is interfaced to many widely used …

All topological bands of all nonmagnetic stoichiometric materials

MG Vergniory, BJ Wieder, L Elcoro, SSP Parkin… - Science, 2022 - science.org
Topological quantum chemistry and symmetry-based indicators have facilitated large-scale
searches for materials with topological properties at the Fermi energy (EF). We report the …

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 …

Photocurrent as a multiphysics diagnostic of quantum materials

Q Ma, R Krishna Kumar, SY Xu, FHL Koppens… - Nature Reviews …, 2023 - nature.com
The photoexcitation life cycle from incident photon (and creation of photoexcited electron–
hole pair) to ultimate extraction of electrical current is a complex multiphysics process …

Weyl, Dirac and high-fold chiral fermions in topological quantum matter

MZ Hasan, G Chang, I Belopolski, G Bian… - Nature Reviews …, 2021 - nature.com
Quantum materials hosting Weyl fermions have opened a new era of research in condensed
matter physics. First proposed in 1929 in the context of particle physics, Weyl fermions have …

Topological negative refraction of surface acoustic waves in a Weyl phononic crystal

H He, C Qiu, L Ye, X Cai, X Fan, M Ke, F Zhang, Z Liu - Nature, 2018 - nature.com
Reflection and refraction of waves occur at the interface between two different media. These
two fundamental interfacial wave phenomena form the basis of fabricating various wave …

Helicity-dependent photocurrents in the chiral Weyl semimetal RhSi

D Rees, K Manna, B Lu, T Morimoto, H Borrmann… - Science …, 2020 - science.org
Weyl semimetals are crystals in which electron bands cross at isolated points in momentum
space. Associated with each crossing point (or Weyl node) is a topological invariant known …