The phase diagram of Sr3Ru2O7 contains a metamagnetic transition that bifurcates to enclose an anomalous phase with intriguing properties - a large resistivity with anisotropy that breaks the crystal-lattice symmetry. We propose that this is a magnetic analogue of the spatially inhomogeneous superconducting Fulde-Ferrel-Larkin-Ovchinnikov state. We show - through a Ginzburg-Landau expansion where the magnetisation transverse to the applied field can become spatially inhomogeneous - that a Stoner model with electronic band dispersion can reproduce this phase diagram and transport behaviour.
@article{arxiv.0810.2096,
title = {Inhomogeneous magnetic phases: a LOFF-like phase in Sr3Ru2O7},
author = {A. M. Berridge and A. G. Green and S. A. Grigera and B. D. Simons},
journal= {arXiv preprint arXiv:0810.2096},
year = {2009}
}