Non-relativistic linear Edelstein effect in helical EuIn2As2

Abstract

Motivated by the ongoing interest in understanding the actual magnetic ground state of the promising axion insulator candidate EuIn2As2, we present here a spin symmetry analysis and ab-initio calculations, aiming to identify specific exchange-dominated physics that could offer insights into the current debate. We investigate two non-collinear coplanar magnetic orders reported in this compound: the helical and broken helical phases. Our symmetry analysis shows that magnetic-exchange alone results in the formation of an out-of-plane odd-wave order in momentum space with a single un-polarized nodal plane in both phases. Additionally, we identified an in-plane g-wave order that emerges exclusively in the broken helical phase, providing a distinguishing feature for this phase. Furthermore, we report a non-relativistic Edelstein effect with a distinct out-of-plane polarized spin density that dominates over spin-orbit coupling effects. Our ab-initio calculations reveal a significant contrast in the magnitude of this effect between both phases, which could serve as a means to identify the magnetic transition and distinguish them from other magnetic ground states proposed for this compound.

Added acknowledgment; no other changes

References in corpus (25)

• Wannier90 as a community code: new features and applications
• Altermagnetism: spin-momentum locked phase protected by non-relativistic symmetries
• Direct observation of altermagnetic band splitting in CrSb thin films
• Higher-order Topology of Axion Insulator EuIn${}_2$As${}_2$
• PyProcar: A Python library for electronic structure pre/post-processing
• Dirac surface states in intrinsic magnetic topological insulators EuSn2As2 and MnBi2nTe3n+1
• Enumeration and representation theory of spin space groups
• High performance Wannier interpolation of Berry curvature and related quantities: WannierBerri code
• Spin Space Groups: Full Classification and Applications
• Intraband and interband spin-orbit torques in non-centrosymmetric ferromagnets
• Magnetic crystalline-symmetry-protected axion electrodynamics and field-tunable unpinned Dirac cones in EuIn2As2
• In-plane antiferromagnetic moments in axion topological insulator candidate EuIn${}_2$As${}_2$
• Colossal Magnetoresistance without Mixed Valence in a Layered Phosphide Crystal
• Temperature Dependent Electronic Structure in a Higher Order Topological Insulator Candidate EuIn${}_2$As${}_2$
• Ab-initio overestimation of the topological region in Eu-based compounds
• Field-induced Topological Hall effect in antiferromagnetic axion insulator candidate EuIn${}_2$As${}_2$
• Signature of band inversion in the antiferromagnetic phase of axion insulator candidate EuIn2As2
• Colossal magnetoresistance in EuZn${}_2$P${}_2$ and its electronic and magnetic structure
• Spin and orbital Edelstein effect in a bilayer system with Rashba interaction
• Algorithm for spin symmetry operation search
• Symmetry-breaking pathway towards the unpinned broken helix
• Hybrid-order topology in unconventional magnets of Eu-based Zintl compounds with surface-dependent quantum geometry
• Incommensurate broken helix induced by nonstoichiometry in the axion insulator candidate EuIn${}_2$As${}_2$
• Doping-tunable Fermi surface with persistent topological Hall effect in axion candidate EuIn${}_2$As${}_2$
• Incommensurate magnetic order in an axion insulator candidate EuIn${}_2$As${}_2$ investigated by NMR measurement

Cited by in corpus (3)

• Floquet Spin Splitting and Spin Generation in Antiferromagnets
• Current-induced spin and orbital polarization in the ferroelectric Rashba semiconductor GeTe
• Altermagnetism Induced Bogoliubov Fermi Surfaces Form Topological Superconductivity