Superconductivity from emerging magnetic moments

Abstract

Multi-orbital Hubbard models are shown to exhibit a spatially isotropic spin-triplet superconducting phase, where equal-spin electrons in different local orbitals are paired. This superconducting state is stabilized in the spin-freezing crossover regime, where local moments emerge in the metal phase, and the pairing is substantially assisted by spin anisotropy. The phase diagram features a superconducting dome below a non-Fermi liquid metallic region and next to a magnetically ordered phase. We suggest that this type of fluctuating-moment induced superconductivity, which is not originating from fluctuations near a quantum critical point, may be realized in spin-triplet superconductors such as strontium ruthenates and uranium compounds.

9 pages, 8 figures

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Cited by in corpus (90)

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• Stabilizing Even-Parity Chiral Superconductivity in Sr${}_2$RuO${}_4$
• Photo-induced enhancement of excitonic order
• Strongly correlated materials from a numerical renormalization group perspective: How the Fermi-liquid state of Sr${}_2$RuO${}_4$ emerges
• Hundness versus Mottness in a three-band Hubbard-Hund model: On the origin of strong correlations in Hund metals
• Electronic orders in multi-orbital Hubbard models with lifted orbital degeneracy
• Fluctuation-frustrated flat band instabilities in NdNiO2
• Dynamical screening in correlated electron systems - from lattice models to realistic materials
• Self-Learning Monte Carlo Method: Continuous-Time Algorithm
• Magnetic response of Sr${}_2$RuO${}_4$: quasi-local spin fluctuations due to Hund's coupling
• Charge disproportionation, mixed valence, and Janus effect in multiorbital systems: A tale of two insulators
• Spontaneous orbital-selective Mott transitions and the Jahn-Teller metal of A${}_3$C${}_{60}$
• Hund's induced Fermi-liquid instabilities and enhanced quasiparticle interactions
• J-freezing and Hund's rules in spin-orbit-coupled multiorbital Hubbard models
• A spin-freezing perspective on cuprates
• Efficient Bethe-Salpeter equations' treatment in dynamical mean-field theory
• Sparse sampling and tensor network representation of two-particle Green's functions
• Enhanced pairing susceptibility in a photo-doped two-orbital Hubbard model
• Shadowed triplet pairings in Hund's metals with spin-orbit coupling
• Long-range orders, spin- and orbital-freezing in the two-band Hubbard model
• Higher angular momentum pairings in interorbital shadowed-triplet superconductors: Application to Sr${}_2$RuO${}_4$
• $\mathrm{F}{\mathrm{e}}_3\mathrm{GeT}{\mathrm{e}}_2$: A site-differentiated Hund metal
• Metal-insulator transitions, superconductivity, and magnetism in the two-band Hubbard model
• Inter-orbital singlet pairing in Sr${}_2$RuO${}_4$: a Hund's superconductor
• Alleviating the Sign Problem in Quantum Monte Carlo Simulations of Spin-Orbit-Coupled Multi-Orbital Hubbard Models
• Differentiating Hund from Mott physics in a three-band Hubbard-Hund model: Temperature dependence of spectral, transport, and thermodynamic properties
• Hund's coupling stabilized superconductivity in the presence of spin-orbit interactions
• LDA+DMFT approach to ordering phenomena and the structural stability of correlated materials
• Finite Temperature Phase Transitions in the SU$(N)$ Hubbard model
• The Triplet Resonating Valence Bond State and Superconductivity in Hund's Metals
• Leading superconducting instabilities in three-dimensional models for Sr2RuO4
• Distinct reduction of Knight shift in superconducting state of Sr${}_2$RuO${}_4$ under uniaxial strain
• Hund physics landscape of two-orbital system
• Interplay between spin-orbit coupling and van Hove singularity in the Hund's metallicity of Sr${}_2$RuO${}_4$
• Spontaneously symmetry breaking states in the attractive SU$(N)$ Hubbard model
• Uncovering Non-Fermi-Liquid Behavior in Hund Metals: Conformal Field Theory Analysis of an SU(2)$\times$SU(3) Spin-Orbital Kondo Model
• Diagrammatic study of optical excitations in correlated systems
• Unconventional Pairing from Local Orbital Fluctuations in Strongly Correlated A${}_3$C${}_{60}$
• Out-of-time-ordered correlators of the Hubbard model: SYK strange metal in the spin freezing crossover region
• Interplay of Coulomb interaction and spin-orbit coupling
• Staggered ordered phases in the three-orbital Hubbard model
• On the Spatial Locality of Electronic Correlations in LiFeAs
• Critical Temperature Enhancement of Topological Superconductors: A Dynamical Mean Field Study
• Detecting phase transitions and crossovers in Hubbard models using the fidelity susceptibility
• Switching between Mott-Hubbard and Hund physics in moiré quantum simulators
• Spin-triplet paired phases inside ferromagnet induced by Hund's rule coupling and electronic correlations: Application to ${\mathrm{UGe}}_2$
• Nonlocal Coulomb interaction and spin-freezing crossover as a route to valence-skipping charge order
• Superconductivity in multiorbital systems with repulsive interactions: Hund's pairing vs. spin-fluctuation pairing
• Nonthermal excitonic condensation near a spin-state transition
• Variational cluster approach to superconductivity and magnetism in the Kondo lattice model
• Correlated electronic structure of Pb${}_{10-x}$Cu${}_x$(PO4)${}_6$O
• Superconductivity enhanced by pair fluctuations between wide and narrow bands
• Residual spin susceptibility in the spin-triplet, orbital-singlet model
• Nature of the Doping-Driven Metal-Insulator Transition in Correlated Electron Systems with strong Hund's Exchange Coupling
• Ferromagnetic spin correlations in the two-dimensional Hubbard model
• Strange Metal Solution in the Diagrammatic Theory for the $2d$ Hubbard Model
• Multiple insulating phases due to the interplay of strong correlations and lattice geometry in a single-orbital Hubbard model
• Spin freezing and the Sachdev-Ye model
• Entropy and electronic orders of the three-orbital Hubbard model with antiferromagnetic Hund coupling
• Slave-spin mean field for broken-symmetry states: Néel antiferromagnetism and its phase separation in multi-orbital Hubbard models
• Role of Local Ru Hexamers in Superconductivity of Ruthenium Phosphide
• Pairing enhanced by local orbital fluctuations in a model for monolayer FeSe
• Novel $J_{\mathrm{eff}}$=3/2 Metallic Phase and Unconventional Superconductivity in GaTa${}_4$Se${}_8$
• Precise ground state of multi-orbital Mott systems via the variational discrete action theory
• Maximum entropy analytic continuation of anomalous self-energies
• Local nodal Cooper pairs in multiorbital systems
• Suppression and revival of long-range ferromagnetic order in the multiorbital Fermi-Hubbard model
• Frozen spin ratio and the detection of Hund correlations
• Interplay of charge and spin fluctuations in a Hund's coupled impurity
• Entropy and specific heat of the infinite-dimensional three-orbital Hubbard model
• Reconciling $\pi$ phase shift in Josephson junction experiments with even-parity superconductivity in Sr${}_2$RuO${}_4$
• Evolution of Interorbital Superconductor to Intraorbital Spin-Density Wave in Layered Ruthenates
• Electronic Correlations and Absence of Superconductivity in the Collapsed Phase of LaFe${}_2$As${}_2$
• Doping asymmetry and layer-selective metal-insulator transition in trilayer K${}_{3+x}$C${}_{60}$
• Parameter-free analytic continuation for quantum many-body calculations
• Instability of Pa$\overline{3}$ Cs${}_3$C${}_{60}$ at ambient pressure and superconducting state of the FCC phase
• Charge Kondo Effect and Superconductivity in the Falikov-Kimball model with the Pair Hopping
• Finite-momentum and field-induced pairings in orbital-singlet spin-triplet superconductors
• Itinerant ferromagnetism in an SU(3) Fermi-Hubbard model at finite temperatures: A dynamical mean-field theory study
• Frequency-Dependent Superconducting States From the Two-Time Linear Response Theory: Application To Sr${}_2$RuO${}_4$
• Triplet pairing, orbital selectivity and correlations in Iron-based superconductors
• Generalized Nagaoka ferromagnetism accompanied by flavor-selective Mott states in an SU($N$) Fermi-Hubbard model
• Flat Topological Nodal Lines in Heavy-Fermion Compound CeCoGe${}_3$
• Many-body electronic structure, self-doped double-exchange, and Hund metallicity in 1T-CrTe2 bulk and monolayer
• Layer controlled orbital selective Mott transition in monolayer nickelate
• Long-term memory magnetic correlations in the Hubbard model: A dynamical mean-field theory analysis
• Efficient slave-boson approach for multiorbital two-particle response functions and superconductivity
• Photoinduced excitonic magnetism in a multiorbital Hubbard system
• Local magnetic moment formation and Kondo screening in the presence of Hund exchange: the two-band Hubbard model analysis