No observation of chiral flux current in the topological kagome metal CsV${}_3$Sb${}_5$

Abstract

Compounds with kagome lattice usually host many exotic quantum states, including the quantum spin liquid, non-trivial topological Dirac bands and a strongly renormalized flat band, etc. Recently an interesting vanadium based kagome family $A$V${}_3$Sb${}_5$ ($A$ = K, Rb, or Cs) was discovered, and these materials exhibit multiple interesting properties, including unconventional saddle-point driving charge density wave (CDW) state, superconductivity, etc. Furthermore, some experiments show anomalous Hall effect which inspires that there might be some chiral flux current states. Here we report scanning tunneling measurements by using spin-polarized tips. Although we have observed clearly the $2a_0\times 2a_0$ CDW and $4a_0$ stripe orders, the well-designed experiments with refined spin-polarized tips do not reveal any trace of the chiral flux current phase in CsV${}_3$Sb${}_5$ within the limits of experimental accuracy. No observation of the local magnetic moment in our experiments may put an upper bound constraint on the magnitude of magnetic moments induced by the possible chiral loop current which has a time-reversal symmetry breaking along $c$-axis in CsV${}_3$Sb${}_5$.

10 pages, 4 figures

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Cited by in corpus (49)

• Kagome superconductors AV${}_3$Sb${}_5$ (A=K, Rb, Cs)
• Quantum states and intertwining phases in kagome materials
• AV${}_3$Sb${}_5$ Kagome Superconductors: Progress and Future Directions
• Discovery of charge order and corresponding edge state in kagome magnet FeGe
• Tuning the competition between superconductivity and charge order in kagome superconductor Cs(V1-xNbx)3Sb5
• Revealing the immediate formation of two-fold rotation symmetry in charge-density-wave state of Kagome superconductor CsV${}_3$Sb${}_5$ by optical polarization rotation measurement
• Correlated order at the tipping point in the kagome metal CsV${}_3$Sb${}_5$
• Theory of nematic charge orders in kagome metals
• Three-dimensional energy gap and origin of charge-density wave in kagome superconductor KV3Sb5
• Electrically controlled superconductor-insulator transition and giant anomalous Hall effect in kagome metal CsV3Sb5 nanoflakes
• Emergent nematicity and intrinsic vs. extrinsic electronic scattering processes in the kagome metal CsV${}_3$Sb${}_5$
• Dynamical Study of the Origin of the Charge Density Wave in $A$V${}_3$Sb${}_5$ ($A=$K, Rb, Cs) Compounds
• Muon-spin relaxation study of the layered kagome superconductor CsV${}_3$Sb${}_5$
• Electronic properties of correlated kagomé metals AV${}_3$Sb${}_5$(A = K, Rb, Cs): A perspective
• The kagome Hubbard model from a functional renormalization group perspective
• Effects of Nb Doping on the Charge-Density Wave and Electronic Correlations in the Kagome Metal Cs(V${}_{1-x}$Nb${}_x$)${}_3$Sb${}_5$
• Superconductivity arising from pressure induced Lifshitz transition in Rb${}_2$Pd${}_3$Se${}_4$ with kagome lattice
• Strong-coupling superconductivity and weak vortex pinning in Ta-doped CsV${}_3$Sb${}_5$ single crystals
• Triple-$\mathcal{Q}$ partial magnetic orders induced by quadrupolar interactions: Triforce order scenario for UNi${}_4$B
• Real-space pairing through a confined local nematic state in cuprate superconductors
• Kagome metals
• Emergent topological quantum orbits in the charge density wave phase of kagome metal CsV${}_3$Sb${}_5$
• Probing orbital magnetism of a kagome metal CsV3Sb5 by a tuning fork resonator
• Search for orbital magnetism in the kagome superconductor $\mathrm{Cs}{\mathrm{V}}_3\mathrm{S}{\mathrm{b}}_5$ using neutron diffraction
• Electronic structure and spin-lattice relaxation in superconducting vortex states on the kagome lattice near van Hove filling
• Non-degenerate surface pair density wave in the Kagome superconductor CsV${}_3$Sb${}_5$ -- application to vestigial orders
• Impact of the orbital current order on the superconducting properties of the kagome superconductors
• Emergence of Quantum Confinement in Topological Kagome Superconductor CsV${}_3$Sb${}_5$ family
• AV${}_3$Sb${}_5$ kagome superconductors: a review with transport measurements
• Interplay between Chiral Charge Density Wave and Superconductivity in Kagome Superconductors: A Self-consistent Theoretical Analysis
• Electrical and thermal transport properties of kagome metals AV${}_3$Sb${}_5$ (A=K, Rb, Cs)
• Quantifying magnetic field driven lattice distortions in kagome metals at the femto-scale using scanning tunneling microscopy
• Interplay of superconductivity and charge-density-wave order in kagome materials
• Truly local topological dynamics of driven defects in Chern insulator
• Evidence for reduced periodic lattice distortion within the Sb-terminated surface layer of the kagome metal CsV${}_3$Sb${}_5$
• Thermomodulated intrinsic Josephson effect in Kagome CsV3Sb5
• Theories for charge-driven nematicity in kagome metals
• Tuning the Intrinsic Spin Hall Effect by Charge Density Wave Order in Topological Kagome Metals
• Local pairing versus bulk superconductivity intertwined by the charge density wave order in Cs(V${}_{1-x}$Ta${}_x$)${}_3$Sb${}_5$
• Type-II Dirac Nodal Lines in double-kagome-layered CsV${}_8$Sb${}_{12}$
• Geometric inhibition of superflow in single-layer graphene suggests a staggered-flux superconductivity in bilayer and trilayer graphene
• Nonequilibrium control of kagome metals
• Loop-current order through the kagome looking glass
• Nanoscale strain manipulation of smectic susceptibility in kagome superconductors
• Limitations of detecting structural changes and time-reversal symmetry breaking in scanning tunneling microscopy experiments
• Orbital altermagnetism on the kagome lattice and possible application to $A$V${}_3$Sb${}_5$
• The possible frustrated superconductivity in the kagome superconductors
• Effective Ionic Valence and Local Magnetic Moment in Kagome Superconductors
• Microscopic evidence for imaginary charge density wave in a kagome metal