Fig. 2.

Scanning electron microscope image and magnetic field distribution of the pillar. a The magnetic pillar dimension is about 220 nm in diameter and 970 nm in height. The pillar was grown by electron-beam-induced deposition. The magnetic field at the center of the pillar reaches values as high as 1.1 T as shown in b. b Magnetic field distribution of a fabricated pillar measured using electron holography when it is tilted by about 60°—note that an in-plane magnetic field induces a transverse Lorentz force (see Fig. 1a, b). The lines are equiphase contours (here drawn every π-phase steps), and correspond to field lines of the magnetic field