Two-Staged Magnetoresistance Driven by Ising-like Spin Sublattice in SrCo6O11
Abstract
A two-staged, uniaxial magnetoresistive effect has been discovered in SrCo6O11 having a layered hexagonal structure. Conduction electrons and localized Ising spins are in different sublattices but their interpenetration makes the conduction electrons sensitively pick up the stepwise field-dependence of magnetization. The stepwise field-dependence suggests two competitive interlayer interactions between ferromagnetic Ising-spin layers, i.e., a ferromagnetic nearest-layer interaction and an antiferromagnetic next-nearest-layer interaction. This oxide offers a unique opportunity to study nontrivial interplay between conduction electrons and Ising spins, the coupling of which can be finely controlled by a magnetic field of a few Tesla.
Keywords
Cite
@article{arxiv.0704.3025,
title = {Two-Staged Magnetoresistance Driven by Ising-like Spin Sublattice in SrCo6O11},
author = {S. Ishiwata and I. Terasaki and F. Ishii and N. Nagaosa and H. Mukuda and Y. Kitaoka and T. Saito and M. Takano},
journal= {arXiv preprint arXiv:0704.3025},
year = {2009}
}
Comments
14 pages, 4 figures, accepted for publication in Phys. Rev. Lett