Modulation Of Electromagnic Waves By Alternating Currents Through Left-Handed Ferromagnetic Microwires

We present experimental results of electromagnetic wave modulation by the application of AC currents along a ferromagnetic microwire at the frequency range where left-handed transmission is observed. It is demonstrated that transmitted microwave signals through a waveguide mount are modulated by the current applied to the wire. From the measurements, we have extracted information about the magnetic susceptibility behavior of the microwires. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3694006]