Spontaneous Spin Polarization Due to Electron—Electron Interaction in Quantum Wires

Conference paper
Part of the Springer Series in Materials Science book series (SSMATERIALS, volume 31)


The electron energy bands in a semiconductor quantum wire in general are expected to show a wave vector dependent spin splitting with terms proportional to k3. We show that the wave vector dependence gives rise to a strong asymmetry of the electron-electron pair scattering with respect to the spin subbands. We show that one consequence of this asymmetry is a new physical effect: Spontaneous Spin Polarization. An electron spin polarization device based on this effect is proposed. The operating principle is explained and limits are discussed.


Fermi Surface Spin Polarization Quantum Wire Spin Splitting Dependent Pair 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  1. 1.Institute of Industrial ScienceUniversity of TokyoMinato-ku, Tokyo 106Japan
  2. 2.‘Structure and Functional Property’-Group, ‘Sakigake 21’-PRESTOResearch Development Corporation of Japan (JRDC)Minato-ku, Tokyo 106Japan
  3. 3.Research Center for Advanced Science and TechnologyUniversity of TokyoMeguro-ku, Tokyo 153Japan

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