Nonlinear Superconducting Magnetoelectric Effect

Abstract

Supercurrent flow can induce a nonvanishing spin magnetization in noncentrosymmetric superconductors with spin-orbit interaction. Often known as the non-dissipative magnetoelectric effect, these are most commonly found at linear order in supercurrent flow. Here, we propose that a {\it nonlinear} superconducting magnetoelectric (NSM) effect can naturally manifest in magnet/superconductor heterostructures. In such platforms, NSM manifests as the spin polarization generated as a second-order response to a driving supercurrent. Strikingly, we find NSM survives centrosymmetry and is the leading order magnetic response in a variety of magnetic materials that include both collinear magnets [e.g., $d$-wave planar altermagnet thin film/superconductor (ALM/SC)] as well as noncollinear magnets (e.g., Kagome/SC systems). This renders NSM a powerful electric and non-dissipative means of controlling magnetization in magnet/superconductor heterostructures, a promising platform for superconducting spintronics.

6 pages, 3 figures, plus Supplementary

References in corpus (7)

• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Majorana corner modes and tunable patterns in an altermagnet heterostructure
• Nonlinear spin current generation in noncentrosymmetric spin-orbit coupled systems
• Quasiclassical theory of superconducting spin-splitter effects and spin-filtering via altermagnets
• Magnetoelectric Andreev effect due to proximity-induced non-unitary triplet superconductivity in helical metals
• Interface-induced magnetization in altermagnets and antiferromagnets
• Thermoelectric Effect in Altermagnet-Superconductor Junctions

Cited by in corpus (16)

• Superconducting phenomena in systems with unconventional magnets
• Unconventional p-wave and finite-momentum superconductivity induced by altermagnetism through the formation of Bogoliubov Fermi surface
• Josephson effect and odd-frequency pairing in superconducting junctions with unconventional magnets
• Classification of pair symmetries in superconductors with unconventional magnetism
• Spin Hall and Edelstein Effects in Novel Chiral Noncollinear Altermagnets
• Floquet engineering spin triplet states in unconventional magnets
• Pseudo-Ising superconductivity induced by $p$-wave magnetism
• Light-induced Floquet spin-triplet Cooper pairs in unconventional magnets
• Thermodynamic formulation of the spin magnetic octupole moment in bulk crystals
• Viscoelastic tensor and hydrodynamics of altermagnets
• Engineering subgap states in superconductors by the symmetry of altermagnetism
• Finite-momentum mixed singlet-triplet pairing in chiral antiferromagnets induced by even-parity spin texture
• Marginal Metals and Kosterlitz-Thouless Type Phase Transition in Disordered Altermagnets
• Cartesian Nodal Lines and Magnetic Kramers Weyl Nodes in Spin-Split Antiferromagnets
• Interplay between Superconductivity and Altermagnetism in Disordered Materials and Heterostructures
• Orbital Longitudinal Magneto-electric Coupling in Multilayer Graphene