Topological kagome magnets and superconductors

JX Yin, B Lian, MZ Hasan - Nature, 2022 - nature.com
A kagome lattice naturally features Dirac fermions, flat bands and van Hove singularities in
its electronic structure. The Dirac fermions encode topology, flat bands favour correlated …

AV3Sb5 kagome superconductors

SD Wilson, BR Ortiz - Nature Reviews Materials, 2024 - nature.com
The recent discovery of the A V3Sb5 (A= K, Rb, Cs) kagome superconductors launched a
growing field of research investigating the interplay between superconductivity and charge …

Discovery of charge density wave in a kagome lattice antiferromagnet

X Teng, L Chen, F Ye, E Rosenberg, Z Liu, JX Yin… - Nature, 2022 - nature.com
A hallmark of strongly correlated quantum materials is the rich phase diagram resulting from
competing and intertwined phases with nearly degenerate ground-state energies,. A well …

Signature of spin-phonon coupling driven charge density wave in a kagome magnet

H Miao, TT Zhang, HX Li, G Fabbris, AH Said… - Nature …, 2023 - nature.com
The intertwining between spin, charge, and lattice degrees of freedom can give rise to
unusual macroscopic quantum states, including high-temperature superconductivity and …

General construction and topological classification of crystalline flat bands

D Călugăru, A Chew, L Elcoro, Y Xu, N Regnault… - Nature Physics, 2022 - nature.com
Exotic phases of matter can emerge from the interplay between strong electron interactions
and non-trivial topology. Materials that have non-dispersing bands in their electronic band …

Loop currents in kagome metals: Multipolar and toroidal magnetic orders

MH Christensen, T Birol, BM Andersen, RM Fernandes - Physical Review B, 2022 - APS
Experiments in the recently discovered vanadium-based kagome metals have suggested
that their charge-ordered state displays not only bond distortions, characteristic of a “real” …

Evidence of two-dimensional flat band at the surface of antiferromagnetic kagome metal FeSn

M Han, H Inoue, S Fang, C John, L Ye, MK Chan… - Nature …, 2021 - nature.com
The kagome lattice has long been regarded as a theoretical framework that connects lattice
geometry to unusual singularities in electronic structure. Transition metal kagome …

Flat-band-induced anomalous anisotropic charge transport and orbital magnetism in kagome metal CoSn

H Huang, L Zheng, Z Lin, X Guo, S Wang, S Zhang… - Physical Review Letters, 2022 - APS
For solids, the dispersionless flat band has long been recognized as an ideal platform for
achieving intriguing quantum phases. However, experimental progress in revealing flat …

Theory of the charge density wave in kagome metals

MH Christensen, T Birol, BM Andersen, RM Fernandes - Physical Review B, 2021 - APS
The family of metallic kagome compounds AV 3 Sb 5 (A= K, Rb, Cs) was recently discovered
to exhibit both superconductivity and charge order. The nature of the charge density wave …

Enhanced spin-polarization via partial Ge-dimerization as the driving force of the charge density wave in FeGe

Y Wang - Physical Review Materials, 2023 - APS
A 2× 2× 2 charge density wave (CDW) was recently observed deep inside the
antiferromagnetic phase of a kagome metal FeGe, which significantly enhances its spin …