Control of Magnetic and Topological Orders with a DC Electric Field

Abstract

We theoretically propose a new route to control magnetic and topological orders in a broad class of insulating magnets with a DC electric field. We show from the strong-coupling expansion that magnetic exchange interactions along the electric-field direction are generally enhanced in Mott insulators. We demonstrate that several magnetic or topological ordered phases such as quantum spin liquids and Haldane-gap states can be derived if we apply a strong enough DC electric field to typical frustrated or low-dimensional magnets. Our proposal is effective especially for weak Mott insulators and magnets in the vicinity of quantum critical points, and would also be applicable for magnets under low-frequency AC electric fields such as terahertz laser pulses. A similar strategy of controlling exchange interactions can also be utilized in cold atomic systems.

7+6 pages, 4+1 figures

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Cited by in corpus (16)

• High-harmonic generation by electric polarization, spin current, and magnetization
• Photo-induced nonequilibrium states in Mott insulators
• Theory for shift current of bosons: Photogalvanic spin current in ferrimagnetic and antiferromagnetic insulators
• Supercurrent-induced topological phase transitions
• Electric polarization and nonlinear optical effects in noncentrosymmetric magnets
• Electric-field control of magnetic anisotropies: applications to Kitaev spin liquids and topological spin textures
• Two-photon driven magnon-pair resonance as a signature of spin-nematic order
• Ultrafast reorientation of the Néel vector in antiferromagnetic Dirac semimetals
• Surface superconductor-insulator transition induced by an electric field
• Control of superexchange interactions with DC electric fields
• Tailoring of the interference-induced surface superconductivity by an applied electric field
• Electric field control of a quantum spin liquid in weak Mott insulators
• Efficient driving of a spin-qubit using single-atom magnets
• Twisted light-induced spin-spin interaction in a chiral helimagnet
• Light-induced switching of magnetic order in the anisotropic triangular-lattice Hubbard model
• Magnetic response and antiferromagnetic correlations in strained kagome ribbons