E-viri
PDF
Recenzirano
Odprti dostop
-
Bliokh, Konstantin Y; Dennis, Mark R; Nori, Franco
Physical review letters, 10/2011, Letnik: 107, Številka: 17Journal Article
Motivated by the recent discovery of electron vortex beams carrying orbital angular momentum (AM), we construct exact Bessel-beam solutions of the Dirac equation. They describe relativistic and nonparaxial corrections to the scalar electron beams. We describe the spin and orbital AM of the electron with Berry-phase corrections and predict the intrinsic spin-orbit coupling in free space. This can be observed as a spin-dependent probability distribution of the focused electron vortex beams. Moreover, the magnetic moment is calculated, which shows different g factors for spin and orbital AM and also contains the Berry-phase correction.
