10 papers
Magnetononlinear Hall effect from multigap topology in metal-organic frameworks
Chun Wang Chau, Wojciech J. Jankowski, Bo Peng +1
We unveil that non-Abelian multigap band topology characterized by nontrivial Euler class invariants induces observable magnetononlinear Hall transport phenomena. We demonstrate th…
Topological Optical Chirality Dichroism
Wojciech J. Jankowski, Giandomenico Palumbo, Robert-Jan Slager
We report on a universal topological dichroism of chiral three-dimensional systems in response to the chirality of light. We show that chiral topological invariants result in integ…
Topological Acoustic Diode
Ashwat Jain, Wojciech J. Jankowski, M. Mehraeen +1
We show that certain three-dimensional topological phases can act as acoustic diodes realizing nonlinear odd acoustoelastic effects. Beyond uncovering topologically-induced anomalo…
Quantum Geometric Bounds in Non-Hermitian Systems
Milosz Matraszek, Wojciech J. Jankowski, Jan Behrends
We identify quantum geometric bounds for observables in non-Hermitian systems. We find unique bounds on non-Hermitian quantum geometric tensors, generalized two-point response corr…
Probing Tensor Monopoles and Gerbe Invariants in Three-Dimensional Topological Matter
Wojciech J. Jankowski, Robert-Jan Slager, Giandomenico Palumbo
We show that momentum-space tensor monopoles corresponding to nontrivial vector bundle generalizations, known as bundle gerbes, can be realized in bands of three-dimensional topolo…
Enhancing the Hyperpolarizability of Crystals with Quantum Geometry
Wojciech J. Jankowski, Robert-Jan Slager, Michele Pizzochero
We demonstrate that higher-order electric susceptibilities in crystals can be enhanced and understood through nontrivial topological invariants and quantum geometry, using one-dime…