Scaling theory of magnetism in frustrated Kondo lattices
arXiv:1911.13083 · doi:10.1088/1361-648X/ab5cb0
Abstract
A scaling theory of the Kondo lattices with frustrated exchange interactions is developed, criterium of antiferromagnetic ordering and quantum-disordered state being investigated. The calculations taking into account magnon and incoherent spin dynamics are performed. Depending on the bare model parameters, one or two quantum phase transitions into non-magnetic spin-liquid and Kondo Fermi-liquid ground states can occur with increasing the bare coupling constant. Whereas the renormalization of the magnetic moment in the ordered phase can reach orders of magnitude, spin fluctuation frequency and coupling constant are moderately renormalized in the spin-liquid phase. This justifies application of the scaling approach. Possibility of a non-Fermi-liquid behavior is treated.
arXiv comment11 pages, 6 figures, J.Phys.: Cond. Mat., accepted
References in corpus (20)
- Heavy Fermions and Quantum Phase Transitions
- Weak magnetism and non-Fermi liquids near heavy-fermion critical points
- Two-dimensional fluctuations at the quantum-critical point of CeCu_{6-x}Au_x
- Frustration and the Kondo effect in heavy fermion materials
- Spin correlations in the algebraic spin liquid - implications for high Tc superconductors
- Gapless spin-liquid phase in an extended spin 1/2 triangular Heisenberg model
- Frustration and quantum criticality
- Evidence for a Non-Fermi-Liquid Phase in Ge-Substituted YbRh2Si2
- Quantum-critical phase out of frustrated magnetism in a strongly correlated metal
- Spin Liquids and Antiferromagnetic Order in the Shastry-Sutherland-Lattice YbPtPb
- Deconfined criticality critically defined
- Approaching quantum criticality in a partially geometrically frustrated heavy-fermion metal
- Quantum phase transitions out of the heavy Fermi liquid
- Scaling picture of magnetism formation in the anomalous f-systems: interplay of the Kondo effect and spin dynamics
- Multiple regions of quantum criticality in YbAgGe
- Scaling theory of magnetic ordering in the Kondo lattices with anisotropic exchange interactions
- Toward a New Microscopic Framework for Kondo Lattice Materials
- Non-Fermi-liquid behavior in the Kondo lattices induced by peculiarities of magnetic ordering and spin dynamics
- Unconventional magnetism of the Kondo lattice
- Magnetic ordering and non-Fermi-liquid behavior in the multichannel Kondo-lattice model