For many materials, a precise knowledge of their dispersion spectra is insufficient to predict
their ordered phases and physical responses. Instead, these materials are classified by the …

The bulk photovoltaic effect (BPVE) occurs in solids with broken inversion symmetry and
refers to DC generation due to uniform illumination, without the need of heterostructures or …

We report on a study of the optical properties of CsV 3 Sb 5 for a large number of
temperatures above and below the charge-density-wave (CDW) transition. Above the CDW …

The absence of mirror symmetry, or chirality, is behind striking natural phenomena found in
systems as diverse as DNA and crystalline solids. A remarkable example occurs when chiral …

Elemental tellurium, conventionally recognized as a narrow bandgap semiconductor, has
recently aroused research interests for exploiting Weyl physics. Chirality is a unique feature …

Ultrafast experiments using sub-picosecond pulses of light are poised to play an important
role in the study and use of topological materials and, particularly, of the three-dimensional …

We report measurement of terahertz anomalous Hall conductivity and Faraday rotation in the
magnetic Weyl semimetal Co 2 MnGa thin films as a function of the magnetic field …

We report the optical conductivity in high-quality crystals of the chiral topological semimetal
CoSi, which hosts exotic quasiparticles known as multifold fermions. We find that the optical …

In chiral crystals crystalline symmetries can protect multifold fermions, pseudorelativistic
masless quasiparticles that have no high-energy counterparts. Their realization in transition …

Ferromagnetism can be characterized by various distinct phenomena such as non-zero
magnetization (inducing magnetic attraction/repulsion), diagonal piezomagnetism …