870 citations · 5.9k across the 102 of their papers we have counts for
65 papers · 1 filter
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…
Orbital magnetization reveals multiband topology
Chun Wang Chau, Robert-Jan Slager, Wojciech J. Jankowski
We demonstrate that nontrivial multiband topological invariants of electronic wavefunctions can be revealed through orbital magnetization responses to external magnetic fields. We…
Nonlinear Odd Viscoelastic Effect
Ashwat Jain, Wojciech J. Jankowski, M. Mehraeen +1
We uncover a class of nonlinear odd viscoelastic effects in three spatial dimensions. We show that these dissipationless effects arise upon combining geometric distortions in two o…
Measuring non-Abelian quantum geometry and topology in a multi-gap photonic lattice
Martin Guillot, Cédric Blanchard, Martina Morassi +8
Recent discoveries in semi-metallic multi-gap systems featuring band singularities have galvanized enormous interest in particular due to the emergence of non-Abelian braiding prop…
Topological non-Abelian gauge structures in Cayley-Schreier lattices
Zoltán Guba, Robert-Jan Slager, Lavi K. Upreti +1
Crystalline constructions known as Cayley-Schreier lattices have been suggested as a platform for realizing arbitrary gauge fields in synthetic crystals with real hopping amplitude…
Quantum Geometry of Altermagnetic Magnons Probed by Light
Rundong Yuan, Wojciech J. Jankowski, Ka Shen +1
Magnons with momentum-dependent chirality are a key signature of altermagnets. We identify bicircular light as a smoking-gun optical probe for chiral altermagnetic magnons, selecti…
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…
Field-driven band asymmetry and non-reciprocal transport in a helimagnet
Darius-Alexandru Deaconu, Aneesh Agarwal, Rodion Vladimirovich Belosludov +2
Helimagnets exhibit noncollinear spin arrangements characterized by a periodic helical modulation, giving rise to emergent chiral properties. These materials have attracted signifi…
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…
Quantum geometric bounds in spinful systems with trivial band topology
Wojciech J. Jankowski, Robert-Jan Slager, Gunnar F. Lange
We derive quantum geometric bounds in spinful systems with spin topology characterized by a single index protected by a spin gap. Our bounds provide geometric conditio…
Anomalous geometric transport signatures of topological Euler class
Ashwat Jain, Wojciech J. Jankowski, Robert-Jan Slager
We investigate Riemannian quantum-geometric structures in semiclassical transport features of two-dimensional multigap topological phases. In particular, we study nonlinear Hall-li…
Topologically-enhanced exciton transport
Joshua J. P. Thompson, Wojciech J. Jankowski, Robert-Jan Slager +1
Excitons dominate the optoelectronic response of many materials. Depending on the time scale and host material, excitons can exhibit free diffusion, phonon-limited diffusion, or po…
Squeezing Quantum States in Three-Dimensional Twisted Crystals
Vo Tien Phong, Kason Kunkelmann, Christophe De Beule +4
A fundamental idea in wave mechanics is that propagation in a periodic medium can be described by Bloch waves whose conserved crystal momenta define their transformations when disp…
Shift photocurrent vortices from topological polarization textures
Aneesh Agarwal, Wojciech J. Jankowski, Daniel Bennett +1
Following the recent interest in van der Waals (vdW) ferroelectrics, topologically nontrivial polar structures have been predicted to form in twisted bilayers. However, these struc…
Quasiperiodicity protects quantized transport in disordered systems without gaps
Emmanuel Gottlob, Dan S. Borgnia, Robert-Jan Slager +1
The robustness of topological properties, such as quantized currents, generally depends on the existence of gaps surrounding the relevant energy levels or on symmetry-forbidden tra…
Excitonic topology and quantum geometry in organic semiconductors
Wojciech J. Jankowski, Joshua J. P. Thompson, Bartomeu Monserrat +1
Excitons drive the optoelectronic properties of organic semiconductors which underpin devices including solar cells and light-emitting diodes. Here we show that excitons can exhibi…
Non-Abelian Hopf-Euler insulators
Wojciech J. Jankowski, Arthur S. Morris, Zory Davoyan +3
We discuss a class of three-band non-Abelian topological insulators in three dimensions that carry a single bulk Hopf index protected by spatiotemporal () inversion s…
Polarization textures in crystal supercells with topological bands
Wojciech J. Jankowski, Daniel Bennett, Aneesh Agarwal +2
Two-dimensional materials are a highly tunable platform for studying the momentum space topology of the electronic wavefunctions and real space topology in terms of skyrmions, mero…
Quantized Integrated Shift Effect in Multigap Topological Phases
Wojciech J. Jankowski, Robert-Jan Slager
We show that certain three-dimensional multigap topological insulators can host quantized integrated shift photoconductivities due to bulk invariants that are defined under reality…
Optical manifestations and bounds of topological Euler class
Wojciech J. Jankowski, Arthur S. Morris, Adrien Bouhon +2
We analyze quantum-geometric bounds on optical weights in topological phases with pairs of bands hosting nontrivial Euler class, a multigap invariant characterizing non-Abelian ban…
Comment on "Floquet non-Abelian topological insulator and multifold bulk-edge correspondence"
Robert-Jan Slager, Adrien Bouhon, F. Nur Ünal
We comment on the recent paper ``Floquet non-Abelian topological insulator and multifold bulk-edge correspondence" by Tianyu Li and Haiping Hu, Nat. Comm. {\bf 14}, 6418 (2023). Ap…
Three-dimensional -symmetric topological phases with Pontryagin index
Zory Davoyan, Wojciech J. Jankowski, Adrien Bouhon +1
We report on a certain class of three-dimensional topological insulators and semimetals protected by spinless symmetry, hosting an integer-valued bulk inva…