Electric-Field-Induced Antiferromagnetic Insulating State in a Metallic Ferromagnet

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  • Atsushi Ono
    Department of Physics, Tohoku University, Sendai 980-8578, Japan
  • Sumio Ishihara
    Department of Physics, Tohoku University, Sendai 980-8578, Japan

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We show that a static electric field induces the transition from a ferromagnetic metal to an antiferromagnetic insulator owing to the Bloch oscillation of conduction electrons. In the steady state, the electric current is inversely proportional to the applied electric field, implying the nonperturbative insulating nature that is different from the Wannier-Stark localization. Possible experimental realization based on recent terahertz pulse sources is discussed.

2 pages, 3 figures

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