Jasper van Wezel

TL;DR: In this article, a new method was proposed to categorize all topologically distinct electronic band structures in materials with only crystal symmetries for any number of physically relevant dimensions, including the dimension of the crystal lattice.

TL;DR: In this paper, momentum-resolved electron energy-loss spectroscopy (M-EELS) was used to study electronic collective modes in the transition metal dichalcogenide semimetal 1 T ‐TiSe 2, where the energy of the electronic mode fell to zero at nonzero momentum, indicating dynamical slowing of plasma fluctuations and crystallization of the valence electrons into an exciton condensate.

TL;DR: In this paper, the authors identify and observe a form of bulk-edge correspondence for a particular non-Hermitian topological phase and show that a change in the bulk topological invariant leads to a change of topological edge-mode localization together with peculiar purely non-hermitian properties.

TL;DR: This work uses scanning tunneling microscopy to image a previously unknown unidirectional (stripe) charge-density wave (CDW) smoothly interfacing with the familiar trid Directional (triangular) CDW on the surface of the stoichiometric superconductor NbSe2, and suggests a promising direction of inquiry for resolving similarly longstanding debates in cuprate superconductors and other strongly correlated materials.

TL;DR: Kusmartseva et al. as discussed by the authors proposed a simplified quasi-one-dimensional model in which the interaction between the structural and excitonic charge fluctuations can be studied, and the balance between competition and cooperation of these degrees of freedom is seen to have a large effect on the nature of the observed charge density wave transition.