Electronic properties of correlated kagomé metals AV${}_3$Sb${}_5$(A = K, Rb, Cs): A perspective

Abstract

Following the discovery of a new family of kagomé prototypical materials with structure AV${}_3$Sb${}_5$ (A = K, Rb, Cs), there has been heightened interest in studying the correlation-driven electronic phenomena in these kagomé lattice systems. The study of these materials has gone beyond magneto-transport measurements to reveal exciting features such as Dirac bands, anomalous Hall effect, bulk superconductivity with $T_c$ $\sim$ 0.9 K-2.5 K, and the observation of charge density wave instabilities, suggesting an intertwining of topological physics and new quantum orders. Moreover, very recent works on numerous types of experiments have appeared further examining the unconventional superconductivity and the exotic electronic states found within these kagomé materials. Theories on the strong interactions that play a role in these systems have been proposed to shed light on the nature of these topological charge density waves. In this brief review, we summarize these recent experimental findings and theoretical proposals, and envision the materials as new platforms to study the interplay between topological physics and strongly-correlated electronic systems.

12 pages, 4 figures, accepted in J. Appl. Phys. (invited perspective article)

References in corpus (73)

• CsV${}_3$Sb${}_5$: a ${\mathbb{Z}}_2$ topological kagome metal with a superconducting ground state
• Discovery of unconventional chiral charge order in kagome superconductor KV3Sb5
• Roton pair density wave and unconventional strong-coupling superconductivity in a topological kagome metal
• Cascade of correlated electron states in a kagome superconductor CsV3Sb5
• Discovery of a quantum limit Chern magnet TbMn6Sn6
• Unconventional Fermi surface instabilities in the Kagome Hubbard Model
• Charge density waves and electronic properties of superconducting kagome metals
• Superconductivity in the ${\mathbb{Z}}_2$ kagome metal KV${}_3$Sb${}_5$
• Negative flat band magnetism in a spin-orbit coupled correlated kagome magnet
• Double superconducting dome and triple enhancement of Tc in the kagome superconductor CsV3Sb5 under high pressure
• Concurrence of anomalous Hall effect and charge density wave in a superconducting topological kagome metal
• Three-dimensional charge density wave and robust zero-bias conductance peak inside the superconducting vortex core of a kagome superconductor CsV${}_3$Sb${}_5$
• Superconductivity and normal-state properties of kagome metal RbV3Sb5 single crystals
• Unusual competition of superconductivity and charge-density-wave state in a compressed topological kagome metal
• Observation of Unconventional Charge Density Wave without Acoustic Phonon Anomaly in Kagome Superconductors AV3Sb5 (A=Rb,Cs)
• Chiral flux phase in the Kagome superconductor AV${}_3$Sb${}_5$
• Analysis of Charge Order in the Kagome Metal $A$V${}_3$Sb${}_5$ ($A=$K,Rb,Cs)
• Electronic instabilities of kagome metals: saddle points and Landau theory
• Nature of unconventional pairing in the kagome superconductors AV${}_3$Sb${}_5$
• Electronic Nature of Charge Density Wave and Electron-Phonon Coupling in Kagome Superconductor KV${}_3$Sb${}_5$
• Rotation symmetry breaking in the normal state of a kagome superconductor KV3Sb5
• Fermi surface mapping and the nature of charge density wave order in the kagome superconductor CsV${}_3$Sb${}_5$
• Complex charge density waves at Van Hove singularity on hexagonal lattices: Haldane-model phase diagram and potential realization in kagome metals ${\text{AV}}_3{\text{Sb}}_5$
• Multiband superconductivity with sign-preserving order parameter in kagome superconductor CsV3Sb5
• Twofold symmetry of $c$-axis resistivity in topological kagome superconductor CsV${}_3$Sb${}_5$ with in-plane rotating magnetic field
• Electronic nature of chiral charge order in the kagome superconductor CsV3Sb5
• Pressure-induced Reemergence of Superconductivity in Topological Kagome Metal CsV3Sb5
• Intrinsic nature of chiral charge order in the kagome superconductor RbV3Sb5
• s-wave superconductivity in kagome metal CsV${}_3$Sb${}_5$ revealed by ${}^{121/123}$Sb NQR and ${}^{51}$V NMR measurements
• Interplay between charge order and superconductivity in the kagome metal KV${}_3$Sb${}_5$
• Theory of the charge-density wave in $A$V${}_3$Sb${}_5$ kagome metals
• Nodeless superconductivity in the kagome metal CsV${}_3$Sb${}_5$
• Origin of the Charge Density Wave in the Kagome Metal CsV${}_3$Sb${}_5$ as Revealed by Optical Spectroscopy
• Highly-robust reentrant superconductivity in CsV3Sb5 under pressure
• Multiple Energy Scales and Anisotropic Energy Gap in the Charge-Density-Wave Phase of Kagome Superconductor CsV3Sb5
• Absence of local moments in the kagome metal KV3Sb5 as determined by muon spin spectroscopy
• Emergence of new van Hove singularities in the charge density wave state of a topological kagome metal RbV3Sb5
• Anisotropic superconducting properties of Kagome metal CsV3Sb5
• Coherent phonon spectroscopy and interlayer modulation of charge density wave order in the kagome metal CsV${}_3$Sb${}_5$
• Quantum transport evidence of topological band structures of kagome superconductor CsV3Sb5
• Competition of superconductivity and charge density wave in selective oxidized CsV3Sb5 thin flakes
• Charge-density-wave-induced bands renormalization and energy gaps in a kagome superconductor RbV3Sb5
• Charge density wave orders and enhanced superconductivity under pressure in the kagome metal CsV3Sb5
• Electronic correlations in the normal state of kagome superconductor KV${}_3$Sb${}_5$
• Competition between charge-density-wave and superconductivity in the kagome metal RbV3Sb5
• Revealing the competition between charge-density wave and superconductivity in CsV${}_3$Sb${}_5$ through uniaxial strain
• Low-energy optical properties of the non-magnetic kagome metal CsV${}_3$Sb${}_5$
• Evidence of a hidden flux phase in the topological kagome metal CsV${}_3$Sb${}_5$
• Nodal superconductivity and superconducting domes in the topological Kagome metal CsV3Sb5
• Unconventional charge density wave and photoinduced lattice symmetry change in Kagome Metal CsV${}_3$Sb${}_5$ probed by time-resolved spectroscopy
• Manipulation of Jeff=3/2 states by tuning the tetragonal distortion
• No observation of chiral flux current in the topological kagome metal CsV${}_3$Sb${}_5$
• Geometry of the charge density wave in kagom$\acute{e}$ metal AV${}_3$Sb${}_5$
• Tuning the van Hove singularities in AV${}_3$Sb${}_5$ (A = K, Rb, Cs) via pressure and doping
• Distinctive momentum dependent charge-density-wave gap observed in CsV${}_3$Sb${}_5$ superconductor with topological Kagome lattice
• A bird's eye view on the flat and conic band world of the honeycomb and Kagome lattices: Towards an understanding of 2D Metal-Organic Frameworks electronic structure
• Strain-sensitive superconductivity in kagome metals KV${}_3$Sb${}_5$ and CsV${}_3$Sb${}_5$ probed by point-contact spectroscopy
• Anisotropic proximity-induced superconductivity and edge supercurrent in Kagome metal, K1-xV3Sb5
• Carrier Injection and Manipulation of Charge-Density Wave in Kagome Superconductor CsV3Sb5
• First-principles study on the double-dome superconductivities in kagome material CsV${}_3$Sb${}_5$ under pressure
• Origin of Charge Density Wave in Layered Kagome Metal CsV${}_3$Sb${}_5$
• Magneto-Seebeck effect and ambipolar Nernst effect in CsV${}_3$Sb${}_5$ superconductor
• Structures and physical properties of V-based kagome metals CsV${}_6$Sb${}_6$ and CsV${}_8$Sb${}_{12}$
• Discovery of two families of VSb-based compounds with V-kagome lattice
• Evolution of superconductivity and charge order in pressurized RbV${}_3$Sb${}_5$
• Tri-Hexagonal charge order in kagome metal CsV${}_3$Sb${}_5$ revealed by ${}^{121}$Sb NQR
• Doping evolution of superconductivity, charge order and band topology in hole-doped topological kagome superconductors Cs(V${}_{1-x}$Ti${}_x$)${}_3$Sb${}_5$
• Type-II Nodal Line Fermions in New Z2 Topological Semimetals AV6Sb6 (A=K, Rb,and Cs) with Kagome Bilayer
• Orbital ordering and fluctuations in a kagome superconductor CsV3Sb5
• Electron correlations and $T$-breaking density wave order in a ${\mathbb{Z}}_2$ kagome metal
• Higher-order topological insulators from $3Q$ charge bond orders on hexagonal lattices: A hint to kagome metals
• Titanium doped kagome superconductor CsV3-xTixSb5 and two distinct phases
• Low-energy effective theory and symmetry classification of flux phases on Kagome lattice

Cited by in corpus (14)

• Electrically controlled superconductor-insulator transition and giant anomalous Hall effect in kagome metal CsV3Sb5 nanoflakes
• Dynamical Study of the Origin of the Charge Density Wave in $A$V${}_3$Sb${}_5$ ($A=$K, Rb, Cs) Compounds
• Intrinsic first and higher-order topological superconductivity in a doped topological insulator
• Novel three-dimensional Fermi surface and electron-correlation-induced charge density wave in FeGe
• Charge fluctuations above $T_{\mathrm{CDW}}$ revealed by glasslike thermal transport in kagome metals $A$V${}_3$Sb${}_5$ ($A$ = K, Rb, Cs)
• Electronic properties and phase transition in Kagome metal, Yb0.5Co3Ge3
• Charge order in the kagome lattice Holstein model: A hybrid Monte Carlo study
• Phenomenology of bond and flux orders in kagome metals
• Multiple superconducting phases in heavy-fermion metals
• Kagome materials $A$V${}_3$Sb${}_5$ ($A$=K,Rb,Cs): pairing symmetry and pressure-tuning studies
• Interplay of $d$- and $p$-states in RbTi${}_3$Bi${}_5$ and CsTi${}_3$Bi${}_5$ flat-band kagome metals
• $T_3$Pb${}_{2}C{h}_2$ ($T$=Pd,Pt and $Ch$=S,Se) with transition metal kagome net: Dynamical properties, phonon nodal line, phonon surface states, and chiral phonons
• Emergent dynamical Kondo coherence and competing magnetic order in a correlated kagome flat-band metal CsCr6Sb6
• Altermagnetism in an interacting model of Kagome materials