Impact of the Dzyaloshinskii-Moriya interaction in strongly correlated itinerant systems

Abstract

Spin-only approaches to anisotropic effects in strongly interacting materials are often insufficient for systems close to the Mott regime. Within a model context, here the consequences of the low-symmetry relevant Dzyaloshinskii-Moriya (DM) interaction are studied for strongly correlated, but overall itinerant, systems. Namely, we investigate the Hubbard bilayer model supplemented by a DM term at half filling and in the hole-doped regime. As an add-on, further results for the two- impurity Anderson model with DM interaction are also provided. The model Hamiltonians are treated by means of the rotational invariant slave boson technique at saddle point within a (cellular) cluster approach. Already small values of the anisotropic interaction prove to have a strong influence on the phases and correlation functions with increasing U. An intriguing metallic spin-flop phase is found in the doped bilayer model and a reduction of the RKKY exchange in the two-impurity model.

8 pages, 11 figures

References in corpus (9)

• Weak ferromagnetism and magnetoelectric coupling in bismuth ferrite
• Quantum spin-liquid emerging in two-dimensional correlated Dirac fermions
• Electrically controllable surface magnetism on the surface of topological insulator
• Rotationally-invariant slave-boson formalism and momentum dependence of the quasiparticle weight
• Pseudogap opening and formation of Fermi arcs as an orbital-selective Mott transition in momentum space
• Comparison of the phase diagram of the half-filled layered organic superconductors with the phase diagram of the RVB theory of the Hubbard-Heisenberg model
• Band insulator to Mott insulator transition in a bilayer Hubbard model
• Magnetic and Transport Properties of a Coupled Hubbard Bilayer with Electron and Hole Doping
• Field-induced staggered magnetic moment in the quasi-two-dimensional organic Mott insulator $\kappa$-(BEDT-TTF)${}_2$Cu[N(CN)${}_2$]Cl

Cited by in corpus (5)

• Multiorbital processes rule the Nd${}_{1-x}$Sr${}_x$NiO${}_2$ normal state
• Low-temperature magnetic ordering and structural distortions in Vanadium Sesquioxide (V${}_2$O${}_3$)
• Rigorous symmetry adaptation of multiorbital rotationally invariant slave-boson theory with application to Hund's rules physics
• Low-Energy Model and Electron-Hole Doping Asymmetry of Single-Layer Ruddlesden-Popper Iridates
• Versatile Approach to the Spin Dynamics in Correlated Electron Systems