The spectral properties of a non‐Hermitian quasi‐1D lattice in two of the possible
dimerization configurations are investigated. Specifically, it focuses on a non‐Hermitian …

In band insulators, without a Fermi surface, adiabatic transport can exist due to the geometry
of the ground state wavefunction. Here we show that for systems driven at a small but finite …

We elaborate that s-wave and d-wave superconductors described by mean field theories
possess a nontrivial quantum geometry. From the overlap of two quasihole states at slightly …

We study the topological bands in twisted bilayer transition metal dichalcogenides in an
external magnetic field. We first focus on a paradigmatic model of WSe 2, which can be …

The spread of valence-band Wannier functions in semiconductors and insulators is a
characteristic property that gives a rough estimation of how insulating is the material. We …

The recent discovery of copper-substituted lead phosphate apatite, also known as LK-99,
has caught much attention owing to certain experimental evidence of room-temperature …

Topological semimetals, such as the Weyl and Dirac semimetals, represent one of the most
active research fields in modern condensed-matter physics. The peculiar physical properties …

Measuring bipartite fluctuations of a conserved charge, such as the particle number, within a
finite region is a powerful approach to characterizing quantum systems. When the measured …

The opacity of graphene is known to be approximately given by the fine-structure constant α
times π. We point out the fact that the opacity is roughly independent of the frequency and …

We investigate the spectral properties of a non-Hermitian quasi-one-dimensional lattice in
two possible dimerization configurations. Specifically, we focus on a non-Hermitian diamond …