95 citations · 305 across the 14 of their papers we have counts for
14 papers
Estimating the Fisher information from ARPES in general two-band models
Gunnar F Lange
The Quantum Fisher information is frequently studied in the fields of quantum sensing and quantum metrology, as it specifies the sensitivity of a sensor through the Crámer-Rao boun…
Optimally embedded tight binding for reproducing geometry dependent observables
Jonas J Telle, Gunnar F Lange
In tight-binding models, the position operator is reduced to intra-cell orbital positions (embeddings). While accurately reproducing band structures, such models often fail for geo…
Electrons on Helium and Entangled Quantum Sensors for Particle Physics
Maria Elena Perruzza, Niyaz R. Beysengulov, Stian D. Bilek +12
Quantum sensors that harness quantum coherence and entanglement are emerging as powerful tools in many fields, including particle physics, promising unprecedented sensitivity beyon…
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…
Electrical transport signatures of metallic surface state formation in the strongly-correlated insulator FeSb2
Alexander G. Eaton, Nicholas J. M. Popiel, Ke-Jun Xu +8
We present local and nonlocal electrical transport measurements of the correlated insulator FeSb. By employing wiring configurations that delineate between bulk- and surface-do…
Photo-induced electronic and spin topological phase transitions in monolayer bismuth
Bo Peng, Gunnar F. Lange, Daniel Bennett +3
Ultrathin bismuth exhibits rich physics including strong spin-orbit coupling, ferroelectricity, nontrivial topology, and light-induced structural dynamics. We use \textit{ab initio…
Negative refraction of Weyl phonons at twin quartz interfaces
Juan D. F. Pottecher, Gunnar F. Lange, Cameron Robey +2
In nature, -quartz crystals frequently form contact twins - two adjacent crystals with the same chemical structure but different crystallographic orientation, sharing a common l…
Helicity-dependent Ultrafast Photocurrents in Weyl Magnet MnSn
Dominik Hamara, Gunnar F. Lange, Farhan Nur Kholid +4
We present an optical pump-THz emission study on non-collinear antiferromagnet MnSn. We show that MnSn acts as a source of THz radiation when irradiated by femtosecond lase…
Projected spin texture as a bulk indicator of fragile topology
Gunnar F. Lange, Adrien Bouhon, Robert-Jan Slager
We study the relationship between projected momentum-space spin textures and Wilson loop winding, proving a map between band topology of and spin topology in certain restricted sym…
Topological continuum charges of acoustic phonons in 2D
Gunnar F. Lange, Adrien Bouhon, Bartomeu Monserrat +1
We analyze the band topology of acoustic phonons in 2D materials by considering the interplay of spatial and internal symmetries with additional constraints that arise from the phy…
Subdimensional topologies, indicators and higher order phases
Gunnar. F. Lange, Adrien Bouhon, Robert-Jan Slager
The study of topological band structures have sparked prominent research interest the past decade, culminating in the recent formulation of rather prolific classification schemes t…
Topological correspondence between magnetic space group representations
Adrien Bouhon, Gunnar F. Lange, Robert-Jan Slager
The past years have seen rapid progress in the classification of topological materials. These diagnostical methods are increasingly getting explored in the pertinent context of mag…
Discovery of a weak topological insulating state and van Hove singularity in triclinic RhBi2
Kyungchan Lee, Gunnar F. Lange, Lin-Lin Wang +8
Time reversal symmetric (TRS) invariant topological insulators (TIs) fullfil a paradigmatic role in the field of topological materials, standing at the origin of its development. A…
Superconducting order of from a three-dimensional microscopic model
Henrik S. Røising, Thomas Scaffidi, Felix Flicker +2
We compute and compare even- and odd-parity superconducting order parameters of strontium ruthenate () in the limit of weak interactions, resulting fro…