Frustrated charge order and cooperative distortions in ScV6Sn6

Abstract

Here we study the stability of charge order in the kagome metal ScV6Sn6. Synchrotron x-ray diffraction measurements reveal high-temperature, short-range charge correlations at the wave vectors along q=(1/3,1/3,1/2) whose inter-layer correlation lengths diverge upon cooling. At the charge order transition, this divergence is interrupted and long-range order freezes in along q=(1/3,1/3,1/3), as previously reported, while disorder enables the charge correlations to persist at the q=(1/3,1/3,1/2) wave vector down to the lowest temperatures measured. Both short-range and long-range charge correlations seemingly arise from the same instability and both are rapidly quenched upon the introduction of larger Y ions onto the Sc sites. Our results validate the theoretical prediction of the primary lattice instability at q=(1/3,1/3,1/2), and we present a heuristic picture for viewing the frustration of charge order in this compound.

References in corpus (13)

• CsV${}_3$Sb${}_5$: a ${\mathbb{Z}}_2$ topological kagome metal with a superconducting ground state
• Unconventional Fermi surface instabilities in the Kagome Hubbard Model
• Electrical Manipulation of a Topological Antiferromagnetic State
• Charge density wave in kagome lattice intermetallic ScV6Sn6
• Theory of the charge-density wave in $A$V${}_3$Sb${}_5$ kagome metals
• Realizing Kagome Band Structure in Two-Dimensional Kagome Surface States of $R{V}_{6}S{n}_6$ ($R$=Gd,Ho)
• Study of the electronic properties of topological kagome metals YV${}_6$Sn${}_6$ and GdV${}_6$Sn${}_6$
• Abundant lattice instability in kagome metal ScV${}_6$Sn${}_6$
• Uniaxial ferromagnetism in the kagome metal TbV${}_6$Sn${}_6$
• Structural evolution of the kagome superconductors $A$V${}_3$Sb${}_5$ ($A$ = K, Rb, and Cs) through charge density wave order
• Optical spectroscopy and band structure calculations of structural phase transition in the Vanadium-based kagome metal ScV${}_6$Sn${}_6$
• Highly anisotropic magnetism in the vanadium-based kagome metal TbV6Sn6
• Anisotropic magnetic property of single crystals $R$V${}_6$Sn${}_6$ ($R$ = Y, Gd - Tm, Lu)

Cited by in corpus (22)

• Softening of a flat phonon mode in the kagome ScV${}_6$Sn${}_6$
• Nanoscale visualization and spectral fingerprints of the charge order in ScV6Sn6 distinct from other kagome metals
• Stability frontiers in the AM${}_6$X${}_6$ kagome metals: The LnNb${}_6$Sn${}_6$ (Ln:Ce-Lu,Y) family and density-wave transition in LuNb${}_6$Sn${}_6$
• Kagome metals
• Diffuse Scattering from Correlated Electron Systems
• Instability of the charge density wave in Kagome magnet FeGe
• Order-by-disorder charge density wave condensation at $\text{q}=(\frac{1}{3},\frac{1}{3},\frac{1}{3})$ in kagome metal ScV${}_6$Sn${}_6$
• Ground-state magnetic structures of topological kagome metals RV${}_6$Sn${}_6$ (R = Tb, Dy, Ho, Er)
• Frustrated Ising charge correlations in the kagome metal ScV${}_6$Sn${}_6$
• Origin of competing charge density waves in kagome metal ScV${}_6$Sn${}_6$
• Orbital selective commensurate modulations of the local density of states in ScV6Sn6 probed by nuclear spins
• Discovery of an Intermediate Nematic State in a Bilayer Kagome Metal ScV6Sn6
• Interleaved bond frustration in a triangular lattice antiferromagnet
• Magnetic order and physical properties of the Kagome metal UNb${}_6$Sn${}_6$
• Incommensurate and commensurate antiferromagnetic orders in the kagome compound UV${}_6$Sn${}_6$
• Pressure suppresses the density wave order in kagome metal LuNb${}_6$Sn${}_6$
• Anomalous Nernst Effect and Its Implications for Time-Reversal Symmetry Breaking in Kagome Metal ScV6Sn6
• Beyond kagome: $p$-bands in kagome metals
• Magnetism of kagome metals $\left({\text{Fe}}_{1-x}{\text{Co}}_x\right)\text{Sn}$ studied by $\mu$SR
• Single crystal growth, structural and physical properties, and absence of a charge density wave in Ti_{0.85}Fe6Ge6
• Structural modulation, physical properties, and electronic band structure of the kagome metal UCr${}_6$Ge${}_6$
• Synergistic doping and stabilization of magnetically tunable LnTi${}_3$(Sb,Sn)${}_4$ (Ln:Ce--Gd) kagome metals