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    Semiclassical study of spin magnetic moment and spin orbit interaction

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    CHUU-DISSERTATION-2010.pdf (528.8Kb)
    Date
    2010-05
    Author
    Chuu, Chih-Piao
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    Abstract
    This dissertation describes the theoretic studies of magnetic moment and spinorbit interaction in vacuum (Dirac wavepacket) and solid state systems, such as semiconductors. The semiclassical approach developed here provides a simple and intuitive picture for the origin of spin and spin-orbit coupling. In the Dirac model, the spin magnetic moment is originated from the self-rotating Dirac wavepacket with a correct g-value. The spin-orbit interaction is related to Berry connection (gauge potential) and the model is generalized to solid state systems. The Rashba effect caused by the spin-orbit coupling in a crystal with asymmetric potential in heterostructure quantum well is calculated by semiclassical spindependent scattering. The exact treatment of interface phase accumulation provides a justification of spin-dependent boundary condition at interface derived in previous treatment using Löwdin decomposition. Other spin-orbit coupling related phenomena in solid state system are also discussed in this thesis.
    Department
    Physics
    Description
    text
    Subject
    Berry phase
    Spin magnetic moment
    Dirac
    Rashba
    Spin orbit
    Spintronics
    Spin dependent scattering
    URI
    http://hdl.handle.net/2152/29150
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