Spin-charge-lattice coupling near the metal-insulator transition in Ca3Ru2O7

Details Spin-charge-lattice coupling near the metal-insulator transition in Ca3Ru2O7 Spin-charge-lattice coupling near the metal-insulator transition in Ca3Ru2O7

2007-06-05

arxiv.org/abs/0706.0689v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 4 figures, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.75.212403

We report x-ray scattering studies of the c-axis lattice parameter in Ca3Ru2O7 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, which does, gives rise to rich behavior for B $\parallel$ b.

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