Anomalous Longitudinal Magnetic Field near the Surface of Copper Conductors
arXiv:cond-mat/0210377 · doi:10.1088/0953-4075/35/21/102
Abstract
We have used ultracold atoms to characterize the magnetic field near the surface of copper conductors at room temperature carrying currents between 0.045 A and 2 A. In addition to the usual circular field we find an additional, 1000 - 10000 times smaller longitudinal field. The field changes its strength periodically with a period of 200-300 um.
accepted by Journal of Physics B (http://www.iop.org)