Spin current and magnetoelectric effect in noncollinear magnets.

  title={Spin current and magnetoelectric effect in noncollinear magnets.},
  author={Hosho Katsura and Naoto Nagaosa and Alexander Vladimirovich Balatsky},
  journal={Physical review letters},
  volume={95 5},
A new mechanism of the magnetoelectric effect based on the spin supercurrent is theoretically presented in terms of a microscopic electronic model for noncollinear magnets. The electric polarization P(ij) produced between the two magnetic moments S(i) and S(j) is given by P proportional e(ij) X (S(i) X S(j)) with e(ij) being the unit vector connecting the sites i and j. Applications to the spiral spin structure and the gauge theoretical interpretation are discussed. 

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These are a set of notes I have made, based on lectures given by M.Moore at the University of Manchester Jan-June ’08. Please e-mail me with any comments/corrections: jap@watering.co.uk.

Science 301(5638) 1348 (2003); J

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Physique 3e series