Spectroscopy of stripe order in La1.8Sr0.2NiO4 using resonant soft x-ray diffraction

Abstract

Strong resonant enhancements of the charge-order and spin-order superstructure-diffraction intensities in La1.8Sr0.2NiO4 are observed when x-ray energies in the vicinity of the Ni L2,3 absorption edges are used. The pronounced photon-energy and polarization dependences of these diffraction intensities allow for a critical determination of the local symmetry of the ordered spin and charge carriers. We found that not only the antiferromagnetic order but also the charge-order superstructure resides within the NiO2 layers; the holes are mainly located on in-plane oxygens surrounding a Ni2+ site with the spins coupled antiparallel in close analogy to Zhang-Rice singlets in the cuprates.

4 pages, 3 figures

References in corpus (8)

• A `checkerboard' electronic crystal state in lightly hole-doped Ca_{2-x}Na_{x}CuO_{2}Cl_{2}
• Two-Dimensional Geometry of Spin Excitations in the High Temperature Superconductor YBa2Cu3O6+x
• Hole crystallization in the spin ladder of Sr14Cu24O41
• Direct observation of orbital ordering in La${}_{0.5}$Sr${}_{1.5}$MnO${}_4$ using soft x-ray diffraction
• Soft x-ray resonant diffraction study of magnetic and orbital correlations in a manganite near half-doping
• A Structural Probe of the Doped Holes in Cuprate Superconductors
• Orbital Ordering in the Manganites :- Resonant X-ray Scattering Predictions at the Manganese L_II and L_III Edges
• Orbital Ordering, New Phases, and Stripe Formation in Doped Layered Nickelates

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