Altermagnetism from interaction-driven itinerant magnetism

Abstract

Altermagnetism, a new phase of collinear spin-order sharing similarities with antiferromagnets and ferromagnets, has introduced a new guiding principle for spintronic/thermoelectric applications due to its direction-dependent magnetic properties. Fulfilling the promise to exploit altermagnetism for device design depends on identifying materials with tuneable transport properties. The search for intrinsic altermagnets has so far focused on the role of anisotropy in the crystallographic symmetries and in the bandstructure. Here, we present a different mechanism that approaches this goal by leveraging the interplay between a Hubbard local repulsion and the itinerant magnetism given by the presence of van Hove singularities. We show that altermagnetism is stable for a broad range of interactions and dopings and we focus on tunability of the spin-charge conversion ratio.

arXiv comment5 pages, 3 figures

References in corpus (43)

• Altermagnetism: spin-momentum locked phase protected by non-relativistic symmetries
• Crystal Hall effect in Collinear Antiferromagnets
• Efficient Electrical Spin-Splitter Based on Non-Relativistic Collinear Antiferromagnetism
• A minimal two-band model for the superconducting Fe-pnictides
• Multifunctional Antiferromagnetic Materials with Giant Piezomagnetism and Noncollinear Spin Current
• Observation of spin splitting torque in a collinear antiferromagnet RuO2
• Direct observation of altermagnetic band splitting in CrSb thin films
• Observation of Giant Band Splitting in Altermagnetic MnTe
• Strongly Correlated Superconductivity
• Modeling the Unconventional Superconducting Properties of Expanded A${}_3$C${}_{60}$ Fullerides
• Rotationally-invariant slave-boson formalism and momentum dependence of the quasiparticle weight
• X-ray Magnetic Circular Dichroism in Altermagnetic $\alpha$-MnTe
• Ferromagnetism in the two dimensional t-t' Hubbard model at the Van Hove density
• Ferromagnetism in the Hubbard Model on fcc-type lattices
• Minimal Models for Altermagnetism
• Spontaneous Formation of Altermagnetism from Orbital Ordering
• Frustration- and doping-induced magnetism in a Fermi-Hubbard simulator
• Competing orders at higher-order Van Hove points
• Altermagnetic anomalous Hall effect emerging from electronic correlations
• Realizing Altermagnetism in Fermi-Hubbard Models with Ultracold Atoms
• Interplay of altermagnetism and weak ferromagnetism in two-dimensional RuF${}_4$
• Gutzwiller description of non-magnetic Mott insulators: a dimer lattice model
• Observation of Nagaoka Polarons in a Fermi-Hubbard Quantum Simulator
• Valley magnetism, nematicity, and density wave orders in twisted bilayer graphene
• Emergent Bloch Excitations in Mott Matter
• Altermagnetic surface states: towards the observation and utilization of altermagnetism in thin films, interfaces and topological materials
• Interplay between altermagnetism and nonsymmorphic symmetries generating large anomalous Hall conductivity by semi-Dirac points induced anticrossings
• Exciton Mott transition revisited
• Orbital-selective altermagnetism and correlation-enhanced spin-splitting in transition metal oxides
• Wurtzite vs rock-salt MnSe epitaxy: electronic and altermagnetic properties
• Triangular lattice Hubbard model physics at intermediate temperatures
• Rotationally-invariant slave-bosons for Strongly Correlated Superconductors
• Altermagnetism on the Shastry-Sutherland lattice
• Quantum-embedding description of the Anderson lattice model with the ghost Gutzwiller Approximation
• Accuracy of ghost-rotationally-invariant slave-boson and dynamical mean field theory as a function of the impurity-model bath size
• Efficient computational screening of strongly correlated materials -- Multi-orbital phenomenology within the ghost Gutzwiller approximation
• Determination of the Néel vector in rutile altermagnets through x-ray magnetic circular dichroism: the case of MnF${}_2$
• Accuracy of ghost-rotationally-invariant slave-boson theory for multiorbital Hubbard models and realistic materials
• Operatorial formulation of the ghost rotationally-invariant slave-Boson theory
• Time-dependent ghost-Gutzwiller non-equilibrium dynamics
• Quantum embedding for molecules using auxiliary particles -- The ghost Gutzwiller Ansatz
• Charge self-consistent density functional theory plus ghost rotationally-invariant slave-boson theory for correlated materials
• Itinerant ferromagnetism in transition metal dichalcogenides moiré superlattices

Cited by in corpus (18)

• Altermagnetic phase transition in a Lieb metal
• Design of altermagnetic models from spin clusters
• Altermagnetic Instabilities from Quantum Geometry
• Spin and pair density waves in 2D altermagnetic metals
• Exploring d-Wave Magnetism in Cuprates from Oxygen Moments
• Energy Dispersion, Superconductivity and Magnetic Fluctuations in Stacked Altermagnetism Materials
• Altermagnetic polarons: the fate of alter magnetic band splittings at strong coupling
• Magnetic-field-tuned randomness in inhomogeneous altermagnets
• Quantum critical scaling of altermagnetism
• Impact of strong electronic correlations on altermagnets: the case of NiS2
• Band structure picture for topology in strongly correlated systems with the ghost Gutzwiller ansatz
• Van-Hove singularities and competing instabilities in an altermagnetic metal
• Orbital altermagnetism on the kagome lattice and possible application to $A$V${}_3$Sb${}_5$
• Altermagnetism in an interacting model of Kagome materials
• Ghost Embedding Bridging Chemistry and One-Body Theories
• Linear Foundation Model for Quantum Embedding: Data-Driven Compression of the Ghost Gutzwiller Variational Space
• Symmetry-directed electronic and optical properties in a two-dimensional square-lattice ZnPc-MOF
• Spontaneous emergence of altermagnetism in the single-orbital extended Hubbard model