Spin Current and Magnetoelectric Effect in Noncollinear Magnets
Abstract
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→∝e→_{ij}×(S→_{i}×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.
 Publication:

Physical Review Letters
 Pub Date:
 July 2005
 DOI:
 10.1103/PhysRevLett.95.057205
 arXiv:
 arXiv:condmat/0412319
 Bibcode:
 2005PhRvL..95e7205K
 Keywords:

 75.80.+q;
 71.70.Ej;
 77.80.e;
 Magnetomechanical and magnetoelectric effects magnetostriction;
 Spinorbit coupling Zeeman and Stark splitting JahnTeller effect;
 Ferroelectricity and antiferroelectricity;
 Condensed Matter  Strongly Correlated Electrons
 EPrint:
 5 pages, 2 figures