Magnetic Monopole Field E xposed B y E lectrons

1. Magnetic Monopole Field Exposed By Electrons Background: In magnetic and electric fields there exists a strong symmetry as explained by the Maxwell equations. Yet this equation does not forbid the existence of a magnetic monopole and the search for a monopole continues. Experiment: An local magnetic monopole field may be produced using the Aharonov-Bohm effect and its effect on the surrounding was studied. A nickel needle and its copper base are soldered to a gold plated SiN aperture using FIB assisted Pt deposition. Half of the Ni needle is positioned over a circular aperture forming a local monopole field. Observation: The effect the monopole would have on a plane electron wave was studied and shown to produce a vortex electron state. A diffraction of fast electrons moving through the field was observed. Applications: This experiment gives foresight into how to detect magnetic monopoles in high energy collisions, cosmological processes, or novel materials. Even without a true magnetic monopole, electric vortices can be created and used for experimental study. Alex Miloshevsky Source: http://arxiv.org/ftp/arxiv/papers/1305/1305.0570.pdf