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    Relativistic electron vortex beams: angular momentum and spin-orbit interaction

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    Date
    2011-10-17
    Author
    Bliokh, Konstantin Y.
    Dennis, Mark R.
    Nori, Franco
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    Cited 134 times in Scopus (view citations)
    
    Recommended Citation
    Bliokh, Konstantin Y. Dennis, Mark R.; Nori, Franco (2011). Relativistic electron vortex beams: angular momentum and spin-orbit interaction. Physical Review Letters 107 (17),
    Published Version
    https://link.aps.org/accepted/10.1103/PhysRevLett.107.174802
    Abstract
    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.
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    http://hdl.handle.net/10379/10458
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