Correlated order at the tipping point in the kagome metal CsV${}_3$Sb${}_5$

Abstract

Spontaneously broken symmetries are at the heart of many phenomena of quantum matter and physics more generally. However, determining the exact symmetries broken can be challenging due to imperfections such as strain, in particular when multiple electronic orders form complex interactions. This is exemplified by charge order in some kagome systems, which are speculated to show nematicity and flux order from orbital currents. We fabricated highly symmetric samples of a member of this family, CsV${}_3$Sb${}_5$, and measured their transport properties. We find the absence of measurable anisotropy at any temperature in the unperturbed material, however, a striking in-plane transport anisotropy appears when either weak magnetic fields or strains are present. A symmetry analysis indicates that a perpendicular magnetic field can indeed lead to in-plane anisotropy by inducing a flux order coexisting with more conventional bond order. Our results provide a unifying picture for the controversial charge order in kagome metals and highlight the need for microscopic materials control in the identification of broken symmetries.

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Cited by in corpus (43)

• AV${}_3$Sb${}_5$ Kagome Superconductors: Progress and Future Directions
• Charge-loop current order and Z3 nematicity mediated by bond-order fluctuations in kagome metal AV3Sb5 (A=Cs,Rb,K)
• Emergent superconductivity and pair density wave at antiphase boundaries of charge density wave order in kagome metals
• The kagome Hubbard model from a functional renormalization group perspective
• Van-Hove annihilation and nematic instability on a Kagome lattice
• Absence of $E_{2g}$ nematic instability and dominant $A_{1g}$ response in the kagome metal CsV${}_3$Sb${}_5$
• FeGe as a building block for the kagome 1:1, 1:6:6, and 1:3:5 families: hidden d-orbital decoupling of flat band sectors, effective models and interaction Hamiltonians
• Probing orbital magnetism of a kagome metal CsV3Sb5 by a tuning fork resonator
• Kagome metals
• Kagome Materials I: SG 191, ScV${}_6$Sn${}_6$. Flat Phonon Soft Modes and Unconventional CDW Formation: Microscopic and Effective Theory
• Phonon collapse and anharmonic melting of the 3D charge-density wave in kagome metals
• Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor
• Phase-Separated Charge Order and Twinning Across Length Scales in CsV${}_3$Sb${}_5$
• AV${}_3$Sb${}_5$ kagome superconductors: a review with transport measurements
• Real-space Loop Current Pattern in Time-reversal-symmetry Breaking Phase in Kagome Metals
• Quantum-metric-induced giant and reversible nonreciprocal transport phenomena in chiral loop-current phases of kagome metals
• Revealing Rotational Symmetry Breaking Charge-density Wave Order in Kagome Superconductor (Rb, K)V${}_3$Sb${}_5$ by Ultrafast Pump-probe Experiments
• Large Oscillatory Thermal Hall Effect in Kagome Metals
• Thermomodulated intrinsic Josephson effect in Kagome CsV3Sb5
• Coherent Phonon Pairs and Rotational Symmetry Breaking of Charge Density Wave Order in the Kagome Superconductor CsV${}_3$Sb${}_5$
• Interplay of superconductivity and charge-density-wave order in kagome materials
• Theories for charge-driven nematicity in kagome metals
• Discovery of an Intermediate Nematic State in a Bilayer Kagome Metal ScV6Sn6
• Unveiling the nature of electronic transitions in RbV${}_3$Sb${}_5$ with Avoided Level Crossing $\mu$SR
• Successive orthorhombic distortions in kagome metals by molecular orbital formation
• Origin of switchable quasiparticle-interference chirality in loop-current phase of kagome metals measured by scanning-tunneling-microscopy
• Resistive anisotropy in the charge density wave phase of Kagome superconductor CsV3Sb5 thin films
• Loop-current order through the kagome looking glass
• Nonequilibrium control of kagome metals
• Symmetry-broken ground state and phonon mediated superconductivity in Kagome CsV${}_3$Sb${}_5$
• Magnetic field-induced momentum-dependent symmetry breaking in a kagome superconductor
• Kekulé order from diffuse nesting near higher-order Van Hove points
• Magnetism of kagome metals $\left({\text{Fe}}_{1-x}{\text{Co}}_x\right)\text{Sn}$ studied by $\mu$SR
• Valley polarization of Landau levels driven by residual strain in the ZrSiS surface band
• Giant Impurity Effects on Charge Loop Current Order States in Kagome Metals
• Beyond kagome: $p$-bands in kagome metals
• Electron-electron and electron-phonon collision cross sections in CsV3Sb5
• Coexisting electronic smectic liquid crystal and superconductivity in a Si square-net semimetal
• Observation of field-odd and field-free superconducting diode effects in ${\mathrm{Mo}}_2\mathrm{C}$ nanoflakes
• Microscopic evidence for imaginary charge density wave in a kagome metal
• Topological pair density waves in kagome superconductors
• Theory of unconventional magnetism in a Cu-based kagome metal
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