Semiclassical dynamics and transport of the Dirac spin

Chih Piao Chuu*, Ming Che Chang, Qian Niu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


A semiclassical theory of spin dynamics and transport is formulated using the Dirac electron model. This is done by constructing a wavepacket from the positive-energy electron band, and studying its structure and center of mass motion. The wavepacket has a minimal size equal to the Compton wavelength, and has self-rotation about the average spin angular momentum, which gives rise to the spin magnetic moment. Geometric gauge structure in the center of mass motion provides a natural explanation of the spin-orbit coupling and various Yafet terms. Applications of the spin-Hall and spin-Nernst effects are discussed.

Original languageEnglish
Pages (from-to)533-537
Number of pages5
JournalSolid State Communications
Issue number11-12
Publication statusPublished - 2010 Mar


  • D. Spin dynamics
  • D. Spin-orbit effect

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


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