Bookmark 11, 12 & 13. In the plot we see how in two turns of the CM the spin completes a turn and the final red spin vector matches the initial one both in a static electron (Bookmark 11) and in a moving electron (Bookmark 12): again, the CM has a cyclotron motion, and the spin precesses backwards with Larmor angular velocity: in one complete turn of the CM in the cyclotron motion, the spin has only precessed half a turn and in the opposite direction to the cyclotron motion. And only in the second turn the spin has the same direction as originally.
In Bookmark 13 we see that the behaviour is similar in the presence of an additional electric field, the CM cyclotron motion is accelerated upwards, but the spin movement is the same.
In Bookmark 13 we see that the behaviour is similar in the presence of an additional electric field, the CM cyclotron motion is accelerated upwards, but the spin movement is the same.