A small current in strained, hBN-aligned twisted bilayer graphene is predicted to generate a large out-of-plane orbital magnetization and to switch the ferromagnetic state near 3/4 filling.
Magnetoelectric Effects in Gyrotropic Superconductors
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The magnetoelectric effect (or Edelstein effect) in noncentrosymmetric superconductors states that a supercurrent can induce spin magnetization. This is an intriguing phenomenon which has potential applications in superconducting spintronic devices. However, the original Edelstein effect only applies to superconductors with polar point group symmetry. In recent years, many new noncentrosymmetric superconductors have been discovered, such as superconductors with chiral lattice symmetry and superconducting transition metal dichalcogenides with various lattice structures. In this Rapid Communication, we provide a general framework to describe the supercurrent-induced magnetization in these recently discovered superconductors with gyrotropic point groups.
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Giant Orbital Magneto-electric effect and Current-driven Magnetization Switching in Twisted Bilayer Graphene
A small current in strained, hBN-aligned twisted bilayer graphene is predicted to generate a large out-of-plane orbital magnetization and to switch the ferromagnetic state near 3/4 filling.