Published October 7, 2005 | Version v1
Journal article Metadata-only

Spectroscopy of Stripe Order in La1.8Sr0.2NiO4 Using Resonant Soft X-Ray Diffraction

Creators

  • 1. II. Physikalisches Institut, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Cologne (Germany)
  • 2. Department of Quantum Matter, ADSM, Hiroshima University, Higashi-Hiroshima 739-8530 (Japan)
  • 3. Institut fuer Experimentalphysik, Freie Universitaet Berlin, Arnimallee 14, D-14195 Berlin (Germany)
  • 4. Laboratoire Leon Brillouin, CEA-Saclay, 91191 Gif-sur-Yvette Cedex (France)
  • 5. Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, V6T 1Z1 (Canada)
  • 6. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)

Description

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

Additional details

Identifiers

DOI
10.1103/PhysRevLett.95.156402;
arXiv
arXiv:cond-mat/0502357v1;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
95
Journal Issue
15
Journal Page Range
p. 156402-156402.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37012458
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ANTIFERROMAGNETIC MATERIALS; ANTIFERROMAGNETISM; CHARGE CARRIERS; CUPRATES; ELECTRON CORRELATION; LANTHANUM COMPOUNDS; NICKEL COMPLEXES; NICKEL IONS; NICKEL OXIDES; OXYGEN; PHOTONS; POLARIZATION; SOFT X RADIATION; SPIN; STRONTIUM COMPOUNDS; SYMMETRY; X-RAY DIFFRACTION; X-RAY SPECTRA
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ANGULAR MOMENTUM; BOSONS; CHALCOGENIDES; CHARGED PARTICLES; COHERENT SCATTERING; COMPLEXES; COPPER COMPOUNDS; CORRELATIONS; DIFFRACTION; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ELEMENTS; IONIZING RADIATIONS; IONS; MAGNETIC MATERIALS; MAGNETISM; MASSLESS PARTICLES; MATERIALS; NICKEL COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; RADIATIONS; RARE EARTH COMPOUNDS; SCATTERING; SPECTRA; TRANSITION ELEMENT COMPLEXES; TRANSITION ELEMENT COMPOUNDS; X RADIATION

Optional Information

Notes
(c) 2005 The American Physical Society