Abstract
We report x-ray scattering studies of the -axis lattice parameter in as a function of temperature and magnetic field. These structural studies complement published transport and magnetization data, and therefore elucidate the spin-charge-lattice coupling near the metal-insulator transition. Strong anisotropy of the structural change for field applied along orthogonal in-plane directions is observed. Competition between a spin-polarized phase that does not couple to the lattice and an antiferromagnetic metallic phase that does gives rise to a rich behavior for .
- Received 4 May 2007
DOI:https://doi.org/10.1103/PhysRevB.75.212403
©2007 American Physical Society