Double spin resonance in a spatially periodic magnetic field with zero average A. Nogaret, F. Nasirpouri, J.-C. Portal, H. E. Beere, D. A. Ritchie, A. T. Hindmarch and C. H. Marrows EPL, 94 2 (2011) 28001 Published online: 12 April 2011 DOI: 10.1209/0295-5075/94/28001