Coherent sliding dynamics and spin motive force driven by crossed   magnetic fields in chiral helimagnet
  We demonstrated that the chiral soliton lattice formed out of a chiral helimagnet exhibits coherent sliding motion by applying a time-dependent magnetic field parallel to the helical axis, in addition to a static field perpendicular to the helical axis. To describe the coherent sliding, we use the collective coordinate method and numerical analysis. We also show that the time-dependent sliding velocity causes a time-varying Berry cap which causes the spin-motive-force. A salient feature of the chiral soliton lattice is appearance of the strongly amplified spin motive force which is directly proportional to the macroscopic number of solitons (magnetic kinks). 
Jun-ichiro Kishine, I. G. Bostrem, A. S. Ovchinnikov, and Vl. E.   Sinitsyn
cond-mat.str-el cond-mat.mes-hall cond-mat.mtrl-sci