Nonlinear response induced by Ferromagnetism in a Noncentrosymmetric Kondo Lattice system
arXiv:2110.10496
Abstract
Recently, nonlinear responses have been actively studied in both experiments and theory. Particularly interesting are inversion-symmetry broken systems, where an even-order nonlinear electrical conductivity can be nonzero, resulting in nonreciprocity. Second-order nonlinear conductivities attract much attention because of their sensitivity to detect inversion-symmetry breaking in materials and their functionalities. However, while the nonlinear response has been actively studied in noninteracting systems for a long time, the nonlinear response in strongly correlated materials is still poorly understood. This paper analyzes the nonlinear conductivity in a correlated noncentrosymmetric system, namely a Kondo lattice system with Rashba type spin-orbit coupling. We mainly focus on the ferromagnetic phase, in which the second-order nonlinear conductivity becomes finite. Remarkably, we find that the second-order conductivity becomes only finite perpendicular to the ferromagnetic magnetization and has a strong spin dependence; due to a gap at the Fermi energy for one spin direction, the linear and nonlinear conductivity is only finite for the ungapped spin direction. Finally, we analyze sign changes in the nonlinear conductivity, which can be explained by a combination of correlation effects and the energetic shift due to the occurring ferromagnetism.
References in corpus (29)
- Topological Insulators
- New Perspectives for Rashba Spin-Orbit Coupling
- The numerical renormalization group method for quantum impurity systems
- Quantum nonlinear Hall effect induced by Berry curvature dipole in time-reversal invariant materials
- Heavy fermion superconductivity and magnetic order in non-centrosymmetric
- Topological nature of nonlinear optical effects in solids
- Evidence for reversible control of magnetization in a ferromagnetic material via spin-orbit magnetic field
- Superconductivity and spin-orbit coupling in non-centrosymmetric materials: a review
- Giant anisotropic nonlinear optical response in transition metal monopnictide Weyl semimetals
- Unidirectional spin Hall magnetoresistance in ferromagnet/normal metal bilayers
- Sum-rule Conserving Spectral Functions from the Numerical Renormalization Group
- A Numerical Renormalization Group approach to Green's Functions for Quantum Impurity Models
- Confinement-induced Berry phase and helicity-dependent photocurrents
- Large Unidirectional Magnetoresistance in a Magnetic Topological Insulator
- Electrical detection of magnetization reversal without auxiliary magnets
- Anomalous Upper Critical Field in CeCoIn_5/YbCoIn_5 Superlattices with a Rashba-type Heavy Fermion Interface
- Chiral anomaly and giant magnetochiral anisotropy in noncentrosymmetric Weyl semimetals
- Controllable Rashba spin-orbit interaction in artificially engineered superlattices involving the heavy-fermion superconductor CeCoIn5
- Spin-selective Kondo insulator: Cooperation of ferromagnetism and Kondo effect
- Effects of renormalization and non-Hermiticity on nonlinear responses in strongly-correlated electron systems
- Ferromagnetic state in the one-dimensional Kondo lattice model
- Weak ferromagnetism with the Kondo screening effect in the Kondo lattice systems
- Kondo screening coexisting with ferromagnetic order as a possible ground state for Kondo lattice systems
- Lifshitz phase transitions in the ferromagnetic regime of the Kondo lattice model
- Quasiparticles in the Kondo lattice model at partial fillings of the conduction band
- Strong enhancement of the Edelstein effect in f-electron systems
- Competition of striped magnetic order and partial Kondo screened state in the Kondo lattice model
- Enhanced Electrical Magnetochiral Effect by Spin-hedgehog Lattice Structural Transition
- Electron Correlation Effects in Non-Centrosymmetric Metals in the Weak Coupling Regime