Anomalous self-energy and Fermi surface quasi-splitting in the vicinity of a ferromagnetic instability
arXiv:cond-mat/0407473 · doi:10.1103/PhysRevB.71.085105
Abstract
We discuss the low-temperature behavior of the electronic self-energy in the vicinity of a ferromagnetic instability in two dimensions within the two-particle self-consistent approximation, functional renormalization group and Ward-identity approaches. Although the long-range magnetic order is absent at T>0, the self-energy has a non-Fermi liquid form at low energies w<Δ_0 near the Fermi level, where Delta_0 is the ground-state spin splitting. The spectral function at temperatures T<Delta_0 has a two-peak structure with finite spectral weight at the Fermi level. The simultaneous inclusion of self-energy and vertex corrections shows that the above results remain qualitatively unchanged down to very low temperatures T<<Delta_0. It is argued, that this form of the spectral functions implies the quasi-splitting of the Fermi surface in the paramagnetic phase in the presence of strong ferromagnetic fluctuations.
arXiv comment30 pages, 7 figures, RevTeX
References in corpus (34)
- Angle-resolved photoemission spectroscopy of the cuprate superconductors
- d-wave superconductivity and Pomeranchuk instability in the two-dimensional Hubbard model
- Singular quasiparticle scattering in the proximity of charge instabilities
- On the low energy properies of fermions with singular interactions
- Non-perturbative many-body approach to the Hubbard model and single-particle pseudogap
- Renormalization group analysis of the 2D Hubbard model
- Soft Fermi Surfaces and Breakdown of Fermi Liquid Behavior
- Weak Pseudogap Behavior in the Underdoped Cuprate Superconductors
- Nonanalytic behavior of the spin susceptibility in clean Fermi systems
- Quantum-critical behavior of itinerant ferromagnets
- The temperature-flow renormalization group and the competition between superconductivity and ferromagnetism
- Microscopic theory of weak pseudogap behavior in the underdoped cuprate superconductors I: General theory and quasiparticle properties
- Magnetic and superconducting instabilities of the Hubbard model at the van Hove filling
- Non-analytic corrections to the Fermi-liquid behavior
- Superconductivity Near Phase Separation in Models of Correlated Electrons
- Theoretical Study of Half-Doped Models for Manganites: Fragility of the CE Phase with Disorder, Two Types of Colossal Magnetoresistances, and Charge-Ordered States for Electron-Doped Materials
- The Superconducting Instabilities of the non half-filled Hubbard Model in Two Dimensions
- Robustness of the van Hove scenario for high-Tc superconductors
- Pseudogap Formation in Models for Manganites
- Renormalization group analysis of magnetic and superconducting instabilities near van Hove band fillings
- Incipient antiferromagnetism and low-energy excitations in the half-filled two-dimensional Hubbard model
- Quasiparticle anisotropy and pseudogap formation from the weak-coupling renormalization group point of view
- Temperature-Dependent Pseudogaps in Colossal Magnetoresistive Oxides
- Many-body Theory vs Simulations for the pseudogap in the Hubbard model
- Electron-doping versus hole-doping in the 2D t-t' Hubbard model
- Flow of the quasiparticle weight in the N-patch renormalization group scheme
- Renormalization Group Approach to the Normal State of Copper-Oxide Superconductors
- Rigid-Band Shift of the Fermi Level in a Strongly Correlated Metal: Sr(2-y)La(y)RuO(4)
- The dispersion of a single hole in an antiferromagnet
- Weak ferromagnetism and other instabilities of the two-dimensional t-t' Hubbard model at Van Hove fillings
- Towards analytic description of a transition from weak to strong coupling regime in correlated electron systems. I. Systematic diagrammatic theory with two-particle Green functions
- Limits on Phase Separation for Two-Dimensional Strongly Correlated Electrons
- On Migdal's theorem and the pseudogap
- Electron spectrum, thermodynamics and transport in antiferromagnetic metals at low temperatures
Cited by in corpus (26)
- Chiral superconductivity from repulsive interactions in doped graphene
- Tracking the Footprints of Spin Fluctuations: A MultiMethod, MultiMessenger Study of the Two-Dimensional Hubbard Model
- Fermi surface fluctuations and single electron excitations near Pomeranchuk instability in two dimensions
- Collective fields in the functional renormalization group for fermions, Ward identities, and the exact solution of the Tomonaga-Luttinger model
- Truncated Unity Parquet Solver
- Multiloop functional renormalization group for the two-dimensional Hubbard model: Loop convergence of the response functions
- Spin conservation and Fermi liquid near a ferromagnetic quantum critical point
- Non-Landau damping of magnetic excitations in systems with localized and itinerant electrons
- Magnetic fluctuations and itinerant ferromagnetism in two-dimensional systems with van Hove singularities
- Magnetic fluctuations and self--energy effects in two--dimensional itinerant systems with van Hove singularity of electronic spectrum
- Electronic self-energy and triplet pairing fluctuations in the vicinity of a ferromagnetic instability in 2D systems: the quasistatic approach
- Anisotropy of electronic correlations: On the applicability of local theories to layered materials
- Fermi surface expansion above critical temperature in a Hund ferromagnet
- Spin fluctuations and ferromagnetic order in two-dimensional itinerant systems with Van Hove singularities
- Spectral functions of 2D systems with coupling of electrons to collective or localized spin degrees of freedom
- Magnetic properties of half metal from the paramagnetic phase: DFT+DMFT study of exchange interactions in CrO
- Critical temperature and Ginzburg region near a quantum critical point in two-dimensional metals
- A Modern Model Description of Magnetism
- A Contemporary Model Description of Magnetism
- Quasi-particle functional Renormalisation Group calculations in the two-dimensional half-filled Hubbard model at finite temperatures
- Attractive polaron formed in doped nonchiral/chiral parabolic system within ladder approximation
- Near room-temperature ferromagnetism from double-exchange in the van der Waals material CrGeTe: evidence from optical conductivity under pressure
- Splitting of electronic spectrum in paramagnetic phase of itinerant ferromagnets and altermagnets
- Non-Fermi-liquid behaviour and Fermi-surface expansion induced by van Hove-driven ferromagnetic fluctuations: the D-TRILEX analysis
- Quasi-particle functional Renormalisation Group calculations in the two-dimensional t-t'-Hubbard model
- Electronic properties of the boson mode in a three-point fermion loop and the emergent SYK physics