Classification of exceptional points and non-Hermitian topological semimetals

K Kawabata, T Bessho, M Sato - Physical review letters, 2019 - APS
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 …

Bogoliubov Fermi surfaces: General theory, magnetic order, and topology

PMR Brydon, DF Agterberg, H Menke, C Timm - Physical Review B, 2018 - APS
We present a comprehensive theory for Bogoliubov Fermi surfaces in inversion-symmetric
superconductors which break time-reversal symmetry. A requirement for such a gap …

Computational applications for the discovery of novel antiperovskites and chalcogenide perovskites: a review

M Sheng, S Wang, H Zhu, Z Liu, G Zhou - Frontiers in Chemistry, 2024 - frontiersin.org
Novel perovskites pertain to newly discovered or less studied variants of the conventional
perovskite structure, characterized by distinctive properties and potential for diverse …

Theory of optical responses in clean multi-band superconductors

J Ahn, N Nagaosa - Nature communications, 2021 - nature.com
Electromagnetic responses in superconductors provide valuable information on the pairing
symmetry as well as physical quantities such as the superfluid density. However, at the …

Superconductivity in spin- systems: Symmetry classification, odd-frequency pairs, and Bogoliubov Fermi surfaces

P Dutta, F Parhizgar, AM Black-Schaffer - Physical Review Research, 2021 - APS
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 …

Experimental consequences of Bogoliubov Fermi surfaces

CJ Lapp, G Börner, C Timm - Physical Review B, 2020 - APS
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 …

Higher-order topological insulators in antiperovskites

Y Fang, J Cano - Physical Review B, 2020 - APS
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 …

Impurity-induced triple point fermions in twisted bilayer graphene

A Ramires, JL Lado - Physical Review B, 2019 - APS
Triple point fermions are elusive electronic excitations that generalize Dirac and Weyl
modes beyond the conventional high-energy paradigm. Yet, finding real materials naturally …

Bogoliubov Fermi surfaces stabilized by spin-orbit coupling

H Menke, C Timm, PMR Brydon - Physical Review B, 2019 - APS
It was recently understood that centrosymmetric multiband superconductors that break time-
reversal symmetry generically show Fermi surfaces of Bogoliubov quasiparticles. We …

Planar Hall effect with sixfold oscillations in a Dirac antiperovskite

D Huang, H Nakamura, H Takagi - Physical Review Research, 2021 - APS
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 …