Unidirectional Kondo scattering in layered NbS2

Abstract

Crystalline defects can modify quantum interactions in solids, causing unintuitive, even favourable, properties such as quantum Hall effect or superconducting vortex pinning. Here we present another example of this notion - an unexpected unidirectional Kondo scattering in single crystals of 2H-NbS2. This manifests as a pronounced low-temperature enhancement in the out-of-plane resistivity and thermopower below 40 K, hidden for the in-plane charge transport. The anomaly can be suppressed by the c-axis-oriented magnetic field, but is unaffected by field applied along the planes. The magnetic moments originate from layers of 1T-NbS2, which inevitably form during the growth, undergoing a charge-density-wave reconstruction with each superlattice cell (David-star-shaped cluster of Nb atoms) hosting a localised spin. Our results demonstrate the unique and highly anisotropic response of a spontaneously formed Kondo lattice heterostructure, intercalated in a layered conductor.

arXiv comment44 pages, including the article, 5 figures, and Supplementary Information (6 notes, 9 figures, and 1 table)

References in corpus (34)

• Two-Dimensional Gas of Massless Dirac Fermions in Graphene
• Magic-angle graphene superlattices: a new platform for unconventional superconductivity
• Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
• WannierTools: An open-source software package for novel topological materials
• From the Kondo Regime to the Mixed-Valence Regime in a Single-Electron Transistor
• Evidence of high-temperature exciton condensation in 2D atomic double layers
• Saturation of electrical resistivity
• Defects in correlated metals and superconductors
• Is 1T-TaS${}_2$ a 40 year old quantum spin liquid?
• Fermi Surface Nesting and the Origin of the Charge Density Wave in NbSe${}_2$
• Spin liquid nature in the Heisenberg $J_1$-$J_2$ triangular antiferromagnet
• Superconducting density of states and vortex cores of 2H-NbS2
• Imaging spinon density modulations in a 2D quantum spin liquid
• Origin of superconductivity and latent charge density wave in NbS${}_2$
• Spin-valley locking in the normal state of a transition-metal dichalocogenide superconductor
• Kondo decoherence: finding the right spin model for iron impurities in gold and silver
• Anharmonic suppression of Charge density wave in 2H-NbS${}_2$
• Phonon-assisted magnetic Mott-insulating state in the charge density wave phase of single-layer 1TNbSe2
• Evolution of superconductivity in ultrathin NbS2
• Traces of Charge Density Waves in NbS${}_2$
• Specific-heat measurements of superconducting NbS2 single crystal in an external magnetic field: Study on the energy gap structure
• Preferential out-of-plane conduction and quasi-one-dimensional electronic states in layered 1T-TaS2
• Charge-density-wave phase, mottness and ferromagnetism in monolayer $1T$-NbSe${}_2$
• Charge density wave instability and pressure-induced superconductivity in bulk 1T-NbS2
• Polytypism and Superconductivity in the NbS${}_2$ System
• Charge density wave and spin $1/2$ insulating state in single layer 1T-NbS${}_2$
• Theory of Resistivity Upturns in Metallic Cuprates
• Novel high pressure structures and superconductivity of niobium disulfide
• Quasiparticle $GW$ band structures and Fermi surfaces of bulk and monolayer NbS${}_2$
• Low temperature resistance minimum in non-superconducting 3R-Nb_{1+x}S_2 and 3R-Ga_xNbS_2
• Iron impurities in gold and silver: Comparison of transport measurements to numerical renormalization group calculations exploiting non-Abelian symmetries
• Fermiology and electron-phonon coupling in the 2H and 3R polytypes of NbS${}_2$
• Coexistence of the Kondo effect and spin glass physics in Fe-doped NbS${}_2$
• Artificial heavy fermions in a van der Waals heterostructure

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