Degenerate orbital effect in a three orbital periodic Anderson model
arXiv:1902.00954 · doi:10.1103/PhysRevB.99.245136
Abstract
The competition between the Ruderman-Kittel-Kasuya-Yosida effect and Kondo effect is a central subject of periodic Anderson model. By using the density matrix embedding theory, we study a three orbital periodic Anderson model, in which the effects of degenerate conduction orbitals via the local magnetic moments, number of electrons, and spin-spin correlation functions, are investigated. From the phase diagram at half filling, we find there exists two different anti-ferromagnetic phases and one paramagnetic phase. To explore the difference of the two anti-ferromagnetic phases, the topology of Fermi surface and the connection with standard periodic Anderson model are considered. The spin-spin correlation functions yield insight into the competition between Ruderman-Kittel-Kasuya-Yosida interaction and Kondo interaction. We further find there is a "scaling transformation" connects different ratio of the hybridization strength.
arXiv comment8 pages, 10 figures
References in corpus (33)
- Stripe order in the underdoped region of the two-dimensional Hubbard model
- Density matrix embedding: A simple alternative to dynamical mean-field theory
- Density matrix embedding: A strong-coupling quantum embedding theory
- A practical guide to density matrix embedding theory in quantum chemistry
- A spin-adapted Density Matrix Renormalization Group algorithm for quantum chemistry
- Ground-state phase diagram of the square lattice Hubbard model from density matrix embedding theory
- Surface metal-insulator transition in the Hubbard model
- Extremely strong coupling superconductivity in artificial two-dimensional Kondo lattices
- Spatial inhomogeneity and strong correlation physics: a dynamical mean field study of a model Mott-insulator/band-insulator heterostructure
- Metallic surface of a Mott insulator - Mott insulating surface of a metal
- Fermi Surface Reconstruction without Breakdown of Kondo Screening at Quantum Critical Point
- Anomalous Upper Critical Field in CeCoIn_5/YbCoIn_5 Superlattices with a Rashba-type Heavy Fermion Interface
- Kondo proximity effect: How does a metal penetrate into a Mott insulator?
- The intermediate and spin-liquid phase of the half-filled honeycomb Hubbard model
- Spectral functions of strongly correlated extended systems via an exact quantum embedding
- Spin-Orbital Fluctuations and a large mass enhancement in LiV_2O_4
- Variational Monte Carlo approach to the two-dimensional Kondo lattice model
- Large and Small Fermi-Surface Spin Density Waves in the Kondo Lattice Model
- Perfect dc conductance of a finite width Mott insulator sandwiched between metallic leads at zero temperature: a quantum emergent phenomenon in strongly correlated multilayers
- Ferromagnetism in UGe2 : A microscopic model
- Density matrix embedding theory for interacting electron-phonon systems
- Ferromagnetism and Fermi-surface transition in the periodic Anderson model: Second-order phase transition without symmetry breaking
- Kondo effect in f-electron superlattices
- Lifshitz Transitions in Magnetic Phases of the Periodic Anderson Model
- Effects of an Additional Conduction Band on Singlet-Antiferromagnet Competition in the Periodic Anderson Model
- Mott p-n Junctions in layered materials
- Kondo screening and Magnetism at Interfaces
- Quantum critical Mott transitions in a bilayer Kondo insulator-metal model system
- Phase evolution of the two-dimensional Kondo lattice model near half-filling
- Magnetic ordering and non-Fermi-liquid behavior in the multichannel Kondo-lattice model
- Spectral changes in layered -electron systems induced by Kondo hole substitution in the boundary-layer
- The surface density of states of layered {\it f}-electron materials
- Simple embedding scheme for the spectral properties of the Single-Impurity Anderson Model