Intrinsic Spin Susceptibility and Pseudogap-like Behavior in Infinite-Layer LaNiO2

Abstract

The recent discovery of superconductivity in doped infinite-layer nickelates has stimulated intensive interest, especially for similarities and differences compared to that in cuprate superconductors. In contrast to cuprates, although earlier magnetization measurement reveals a Curie-Weiss-like behavior in undoped infinite-layer nickelates, there is no magnetic ordering observed by elastic neutron scattering down to liquid helium temperature. Until now, the nature of the magnetic ground state in undoped infinite-layer nickelates was still elusive. Here, we perform a nuclear magnetic resonance (NMR) experiment through 139La nuclei to study the intrinsic spin susceptibility of infinite-layer LaNiO2. First, the signature for magnetic ordering or freezing is absent in the 139La NMR spectrum down to 0.24 K, which unambiguously confirms a paramagnetic ground state in LaNiO2. Second, a pseudogap-like behavior instead of Curie-Weiss-like behavior is observed in both the temperature-dependent Knight shift and nuclear spin-lattice relaxation rate (1/T1), which is widely observed in both underdoped cuprates and iron-based superconductors. Furthermore, the scaling behavior between the Knight shift and 1/T1T has also been discussed. Finally, the present results imply a considerable exchange interaction in infinite-layer nickelates, which sets a strong constraint for the proposed theoretical models.

arXiv comment14 pages, 4 figures, accepted by Physical Review Letters

References in corpus (25)

• Computational Studies of Quantum Spin Systems
• Electronic structure of the parent compound of superconducting infinite-layer nickelates
• Infinite Layer LaNiO(2): Ni(1+)is not Cu(2+)
• Anisotropy in the electrical resistivity and susceptibility of superconducting BaFe${}_2$As${}_2$ single crystals
• Self-doped Mott insulator for parent compounds of nickelate superconductors
• The critical nature of the Ni spin state in doped NdNiO${}_2$
• Similarities and differences between infinite-layer nickelates and cuprates and implications for superconductivity
• Robust $d_{x^2-y^2}$-wave superconductivity of infinite-layer nickelates
• A new high-temperature quantum spin liquid with polaron spins
• Evidence of Strong Correlations and Coherence-Incoherence Crossover in the Iron Pnictide Superconductor KFe2As2
• Nickelate superconductors $--$ Multiorbital nature and spin freezing
• Absence of superconductivity in bulk Nd${}_{1-x}$Sr${}_x$NiO${}_2$
• Synthesis and characterization of bulk Nd1-xSrxNiO2 and Nd1-xSrxNiO3
• Hund's metal physics: from SrNiO${}_2$ to NdNiO${}_2$
• Universal linear-temperature dependence of static magnetic susceptibility in iron-pnictides
• Effective Hamiltonian for superconducting Ni oxides Nd${}_{1-x}$Sr${}_x$NiO${}_2$
• Electronic and Magnetic Structure of Infinite-layer ${\text{NdNiO}}_2$: Trace of Antiferromagnetic Metal
• Materials Design for New Superconductors
• Emergent Kondo scaling in iron-based superconductors AFe2As2 (A = K, Rb, Cs)
• Similar glassy features in the NMR response of pure and disordered La1.88Sr0.12CuO4
• 77Se NMR study of pairing symmetry and spin dynamics in KyFe2-xSe2
• Synthesis of infinite-layer LaNiO2 films by metal-organic deposition
• Angle-resolved NMR: quantitative theory of 75As T1 relaxation rate in BaFe2As2
• Core-level x-ray photoemission and Raman spectroscopy studies on electronic structures in Mott-Hubbard type nickelate oxide NdNiO${}_2$
• Enhanced superconducting transition temperature in hyper-interlayer-expanded FeSe despite the suppressed electronic nematic order and spin fluctuations

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• Dynamical Mean Field Studies of Infinite Layer Nickelates: Physics Results and Methodological Implications
• Impact of Cation Stoichiometry on the Crystalline Structure and Superconductivity in Nickelates
• Electronic Structure of Superconducting Infinite-Layer Lanthanum Nickelates
• Superconductivity and Antiferromagnetism in NdNiO${}_2$ and CaCuO${}_2$: A Cluster DMFT Study
• Low Valence Nickelates: Launching the Nickel Age of Superconductivity
• Stability of Superconducting Nd0.8Sr0.2NiO2 Thin Films
• Magnetic properties and pseudogap formation in infinite-layer nickelates: insights from the single-band Hubbard model
• An electronic origin of charge order in infinite-layer nickelates
• Dynamical structural instability and its implication on the physical properties of infinite-layer nickelates
• Screening in a two-band model for superconducting infinite-layer nickelate
• Assessing the correlated electronic structure of lanthanum nickelates
• Possible structural quantum criticality tuned by rare-earth ion substitution in infinite-layer nickelates
• Low-energy plasmon excitations in infinite-layer nickelates
• Signatures of canted antiferromagnetism in infinite-layer nickelates studied by x-ray magnetic dichroism
• Magnetism-Enhanced Strong Electron-Phonon Coupling in Infinite-Layer Nickelate
• Orbital-selective spin-triplet superconductivity in infinite-layer LaNiO${}_2$