Exceptional points are universal level degeneracies induced by non-Hermiticity. Whereas
past decades witnessed their new physics, the unified understanding has yet to be obtained …

We present a comprehensive theory for Bogoliubov Fermi surfaces in inversion-symmetric
superconductors which break time-reversal symmetry. A requirement for such a gap …

The possible symmetries of the superconducting pair amplitude is a consequence of the
fermionic nature of the Cooper pairs. For spin-1/2 systems this leads to the SPOT=− 1 …

Electromagnetic responses in superconductors provide valuable information on the pairing
symmetry as well as physical quantities such as the superfluid density. However, at the …

We predict that a family of antiperovskite materials realize a higher-order topological
insulator phase, characterized by a previously introduced Z 4 index. A tight-binding model …

Triple point fermions are elusive electronic excitations that generalize Dirac and Weyl
modes beyond the conventional high-energy paradigm. Yet, finding real materials naturally …

Superconductors involving electrons with internal degrees of freedom beyond spin can have
internally anisotropic pairing states that are impossible in single-band superconductors. As a …

The planar Hall effect (PHE), wherein a rotating magnetic field in the plane of a sample
induces oscillating transverse voltage, has recently garnered attention in a wide range of …

It was recently understood that centrosymmetric multiband superconductors that break time-
reversal symmetry generically show Fermi surfaces of Bogoliubov quasiparticles. We …

We investigate the robustness against disorder of superconductivity in multiband systems
where the fermions have four internal degrees of freedom. This permits unconventional s …