Topological kagome magnets and superconductors
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 …
its electronic structure. The Dirac fermions encode topology, flat bands favour correlated …
Charge order and superconductivity in kagome materials
Lattice geometry, topological electron behaviour and the competition between different
possible ground states all play a role in determining the properties of materials with a …
possible ground states all play a role in determining the properties of materials with a …
Three-state nematicity and magneto-optical Kerr effect in the charge density waves in kagome superconductors
The kagome lattice provides a fascinating playground to study geometrical frustration,
topology and strong correlations. The newly discovered kagome metals AV3Sb5 (where A …
topology and strong correlations. The newly discovered kagome metals AV3Sb5 (where A …
A unique van Hove singularity in kagome superconductor CsV3-xTaxSb5 with enhanced superconductivity
Van Hove singularity (VHS) has been considered as a driving source for unconventional
superconductivity. A VHS in two-dimensional (2D) materials consists of a saddle point …
superconductivity. A VHS in two-dimensional (2D) materials consists of a saddle point …
Electronic correlations and partial gap in the bilayer nickelate La3Ni2O7
Z Liu, M Huo, J Li, Q Li, Y Liu, Y Dai, X Zhou… - Nature …, 2024 - nature.com
The discovery of superconductivity with a critical temperature of about 80 K in La3Ni2O7
single crystals under pressure has received enormous attention. La3Ni2O7 is not …
single crystals under pressure has received enormous attention. La3Ni2O7 is not …
Electronic instabilities of kagome metals: saddle points and Landau theory
We study electronic instabilities of a kagome metal with a Fermi energy close to saddle
points at the hexagonal Brillouin zone face centers. Using parquet renormalization group …
points at the hexagonal Brillouin zone face centers. Using parquet renormalization group …
Twofold symmetry of c-axis resistivity in topological kagome superconductor CsV3Sb5 with in-plane rotating magnetic field
In transition metal compounds, due to the interplay of charge, spin, lattice and orbital
degrees of freedom, many intertwined orders exist with close energies. One of the commonly …
degrees of freedom, many intertwined orders exist with close energies. One of the commonly …
Charge-Density-Wave-Induced Bands Renormalization and Energy Gaps in a Kagome Superconductor
Recently discovered Z 2 topological kagome metals AV 3 Sb 5 (A= K, Rb, and Cs) exhibit
charge-density-wave (CDW) phases and novel superconducting paring states providing a …
charge-density-wave (CDW) phases and novel superconducting paring states providing a …
High Resolution Polar Kerr Effect Studies of : Tests for Time-Reversal Symmetry Breaking below the Charge-Order Transition
We report high resolution polar Kerr effect measurements on CsV 3 Sb 5 single crystals in
search of signatures of spontaneous time-reversal symmetry breaking below the charge …
search of signatures of spontaneous time-reversal symmetry breaking below the charge …
Small Fermi pockets intertwined with charge stripes and pair density wave order in a kagome superconductor
The kagome superconductor family AV 3 Sb 5 (A= Cs, K, Rb) emerged as an exciting
platform to study exotic Fermi surface instabilities. Here, we use spectroscopic-imaging …
platform to study exotic Fermi surface instabilities. Here, we use spectroscopic-imaging …