Giant magnetoelectric effect in magnetic tunnel junctions coupled to an electromagnetic environment
arXiv:1405.5744 · doi:10.1103/PhysRevB.90.174431
Abstract
We study the magnetization dynamics in ferromagnetinsulatorferromagnet and ferromagnetinsulatornormal metal ultra-small tunnel junctions, and the associated voltage drop in the presence of an electromagnetic environment assisting the tunneling processes. We show that the environment strongly affects the resulting voltage, which becomes a highly non-linear function of the precession cone angle . We find that voltages comparable to the driving frequency can be reached even for small precession cone angles , in stark contrast to the case where the environment is absent. Such an effect could be useful for the detection local magnetization precessions in textured ferromagnets or, conversely, for probing the environment via the magnetization dynamics.
arXiv comment7 pages, 9 figures
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