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 …

Cycling Fermi arc electrons with Weyl orbits

C Zhang, Y Zhang, HZ Lu, XC Xie, F Xiu - Nature Reviews Physics, 2021 - nature.com
The Weyl orbit refers to a new type of cyclotron orbit recently proposed in Weyl semimetals.
This is a surface–bulk hybrid orbit that can be modulated by thickness and external fields …

Chiral phonons in microcrystals and nanofibrils of biomolecules

WJ Choi, K Yano, M Cha, FM Colombari, JY Kim… - Nature …, 2022 - nature.com
Chiral phonons are concerted mirror-symmetric movements of atomic groups connected by
covalent and intermolecular bonds. Such lattice vibrations in crystals of biomolecules should …

Analytical and numerical modeling of optical second harmonic generation in anisotropic crystals using♯ SHAARP package

R Zu, B Wang, J He, JJ Wang, L Weber… - npj Computational …, 2022 - nature.com
Electric-dipole optical second harmonic generation (SHG) is a second-order nonlinear
process that is widely used as a sensitive probe to detect broken inversion symmetry and …

Encyclopedia of emergent particles in type-IV magnetic space groups

Z Zhang, GB Liu, ZM Yu, SA Yang, Y Yao - Physical Review B, 2022 - APS
The research on emergent particles in condensed matters has been attracting tremendous
interest, and recently it is extended to magnetic systems. Here, we study the emergent …

Energy gap of topological surface states in proximity to a magnetic insulator

J Wang, T Wang, M Ozerov, Z Zhang… - Communications …, 2023 - nature.com
Topological surface-states can acquire an energy gap when time-reversal symmetry is
broken by interfacing with a magnetic insulator. This gap has yet to be measured. Such …

Topological quantum matter to topological phase conversion: Fundamentals, materials, physical systems for phase conversions, and device applications

MMH Polash, S Yalameha, H Zhou, K Ahadi… - Materials Science and …, 2021 - Elsevier
The spin-orbit coupling field, an atomic magnetic field inside a Kramers' system, or discrete
symmetries can create a topological torus in the Brillouin Zone and provide protected edge …

Decoupling intranode and internode scattering in Weyl fermions

G Sharma, S Nandy, KV Raman, S Tewari - Physical Review B, 2023 - APS
A series of recent papers claimed that intranode scattering alone can contribute to positive
longitudinal magnetoconductance (LMC) due to the chiral anomaly (CA) in Weyl semimetals …

Mapping domain-wall topology in the magnetic Weyl semimetal CeAlSi

Y Sun, C Lee, HY Yang, DH Torchinsky, F Tafti… - Physical Review B, 2021 - APS
We report full vector mapping of local magnetization in CeAlSi, a Weyl semimetal in which
both inversion and time-reversal symmetries are broken. The vector maps reveal …

Layered topological semimetal GaGeTe: New polytype with non-centrosymmetric structure

S Gallego-Parra, E Bandiello, A Liang… - Materials Today …, 2022 - Elsevier
GaGeTe is a layered van der Waals material composed of germanene and GaTe sublayers
that has been recently predicted to be a basic Z 2 topological semimetal. To date, only one …