Superconductivity in kagome metal YRu3Si2 with strong electron correlations

Abstract

We report the detailed physical properties of YRu3Si2 with the Ru kagome lattice at normal and superconducting states. The results of resistivity and magnetization show that YRu3Si2 is a type-II bulk superconductor with Tc ~ 3.0 K. The specific heat measurement further suggests that this superconductivity could originate from the weak or moderate electron-phonon coupling. On the other hand, both large Kadawaki-Woods ratio and Wilson ratio indicate that there is a strong electron correlation effect in this system, which may have a connection with the featured flat band of kagome lattice.

arXiv comment6 pages, 5 figures, 1 table

References in corpus (26)

• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• Fractionalized excitations in the spin liquid state of a kagomé lattice antiferromagnet
• Quantum Spin Liquids
• CsV${}_3$Sb${}_5$: a ${\mathbb{Z}}_2$ topological kagome metal with a superconducting ground state
• Massive Dirac fermions in a ferromagnetic kagome metal
• Large anomalous Hall effect driven by non-vanishing Berry curvature in non-collinear antiferromagnetic Mn3Ge
• Discovery of unconventional chiral charge order in kagome superconductor KV3Sb5
• Dirac fermions and flat bands in the ideal kagome metal FeSn
• Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions
• Roton pair density wave and unconventional strong-coupling superconductivity in a topological kagome metal
• Discovery of a quantum limit Chern magnet TbMn6Sn6
• Unconventional Fermi surface instabilities in the Kagome Hubbard Model
• Competing electronic orders on Kagome lattices at van Hove filling
• Superconductivity in the ${\mathbb{Z}}_2$ kagome metal KV${}_3$Sb${}_5$
• Topological flat bands in frustrated kagome lattice CoSn
• Superconductivity and normal-state properties of kagome metal RbV3Sb5 single crystals
• Giant and anisotropic many-body spin-orbit tunability in a strongly correlated kagome magnet
• Theoretical prediction of a strongly correlated Dirac metal
• Unified explanation of the Kadowaki-Woods ratio in strongly correlated materials
• Orbital-selective Dirac fermions and extremely flat bands in frustrated kagome-lattice metal CoSn
• Doped Kagome System as Exotic Superconductor
• Anomalous Hall effect of ferromagnetic Fe3Sn2 single crystal with geometrically frustrated kagome lattice
• Strong coupling nature of kagome superconductivity in LaRu${}_3$Si${}_2$
• Anomalous Properties in the Normal and Superconducting States of LaRu${}_3$Si${}_2$
• Type-I superconductivity in KBi2 single crystals
• Transport properties and the anisotropy of Ba_{1-x}K_xFe_2As_2 single crystals in normal and superconducting states

Cited by in corpus (13)

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• Superconductivity from repulsive interactions on the kagome lattice
• Electronic properties and phase transition in Kagome metal, Yb0.5Co3Ge3
• Role of electronic correlations in the Kagome lattice superconductor LaRh${}_3$B${}_2$
• Crossover between electron-electron and electron-phonon mediated pairing on the Kagome lattice
• Superconductivity in kagome metal ThRu3Si2
• Probing the pairing symmetry in kagome superconductors based on the single-particle spectrum
• Intriguing kagome topological materials
• Electronic Correlation Effects on Stabilizing a Perfect Kagome Lattice and Ferromagnetic Fluctuation in LaRu${}_3$Si${}_2$
• Chemical enhancement of superconductivity in LaRu3Si2 with mode-selective coupling between kagome phonons and flat bands
• Bulk superconductivity in the kagome metal YRu3B2
• Superconductivity and Electron Correlations in Kagome Metal LuOs3B2
• Recent progress in quantum spin liquids, fractional magnetization plateaus, and unconventional superconductivity in kagome lattices