Electron beams of cylindrically symmetric spin polarization

TL;DR

This paper reports the first creation of cylindrically symmetric electron beams with specific spin polarization, which are eigenstates of total angular momentum but not of spin or orbital angular momentum.

Contribution

It introduces a novel type of electron beam with cylindrically symmetric spin polarization as eigenstates of total angular momentum, expanding understanding of electron beam properties.

Findings

Electron beams with cylindrically symmetric spin polarization are demonstrated.

These beams are eigenstates of total angular momentum in the z direction.

They are not eigenstates of spin or orbital angular momentum separately.

Abstract

Cylindrically symmetric electron beams in spin polarization are reported for the first time. They are shown to be the eigen states of total angular momentum in the $z$ direction. But they are neither the eigen states of spin nor the eigen states of orbital angular momentum in that direction.