Non-Abelian quantum geometric tensor in degenerate topological semimetals
The quantum geometric tensor characterizes the complete geometric properties of quantum
states, with the symmetric part being the quantum metric and the antisymmetric part being …
states, with the symmetric part being the quantum metric and the antisymmetric part being …
Non-Abelian Hopf-Euler insulators
We discuss a class of three-band non-Abelian topological insulators in three dimensions
that carry a single bulk Hopf index protected by spatiotemporal (PT) inversion symmetry …
that carry a single bulk Hopf index protected by spatiotemporal (PT) inversion symmetry …
Interferometry of non-abelian band singularities and euler class topology
In systems with a real Bloch Hamiltonian band nodes can be characterized by a non-Abelian
frame-rotation charge. The ability of these band nodes to annihilate pairwise is path …
frame-rotation charge. The ability of these band nodes to annihilate pairwise is path …
[HTML][HTML] Observation of an acoustic topological Euler insulator with meronic waves
Topological band theory has conventionally been concerned with the topology of bands
around a single gap. Only recently non-Abelian topologies that thrive on involving multiple …
around a single gap. Only recently non-Abelian topologies that thrive on involving multiple …
Quantized Integrated Shift Effect in Multigap Topological Phases
WJ Jankowski, RJ Slager - Physical Review Letters, 2024 - APS
We show that certain three-dimensional multigap topological insulators can host quantized
integrated shift photoconductivities due to bulk invariants that are defined under reality …
integrated shift photoconductivities due to bulk invariants that are defined under reality …
Exact projected entangled pair ground states with topological Euler invariant
We report on a class of gapped projected entangled pair states (PEPS) with non-trivial Euler
topology motivated by recent progress in band geometry. In the non-interacting limit, these …
topology motivated by recent progress in band geometry. In the non-interacting limit, these …
Quantum geometric bound and ideal condition for Euler band topology
S Kwon, BJ Yang - Physical Review B, 2024 - APS
Understanding the relationship between quantum geometry and topological invariants is a
central problem in the study of topological states. In this work, we establish the relationship …
central problem in the study of topological states. In this work, we establish the relationship …
Nonlinear photomagnetization in insulators
BS Mendoza, N Arzate-Plata… - arXiv preprint arXiv …, 2024 - arxiv.org
Nonlinear photomagnetization is a process by which an oscillating electric field can induce a
static magnetization. We show that all 32 crystallographic point groups admit spin …
static magnetization. We show that all 32 crystallographic point groups admit spin …
Quantized shift response in multi-gap topological phases
WJ Jankowski, RJ Slager - arXiv preprint arXiv:2402.13245, 2024 - arxiv.org
We show that certain 3D multi-gap topological insulators can host quantized shift
photoconductivities due to bulk invariants that are defined under reality conditions imposed …
photoconductivities due to bulk invariants that are defined under reality conditions imposed …
The Drude weight of a flatband metal
Flatband systems form a new class of materials with seemingly contradictory properties that
challenge our understanding of their transport phenomenology. On the one hand, the large …
challenge our understanding of their transport phenomenology. On the one hand, the large …