Fig. 7: Ballistic transport in Co nanocontacts.

a Images of fabricated arrow-shaped Au electrodes bonded to a Si substrate. b High-magnification image of Co contact area between the Au electrodes. c–f The ballistic conductance as a function of the angle Θ between the magnetic field and the sample plane for four different samples. (adapted from ref. 46 with permission, copyright Springer Nature 2007).