Detection of charge scattering associated with stripe order in La{sub 1.775}Sr{sub 0.225}NiO{sub 4} by hard-x-ray diffraction

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.8248· OSTI ID:632607

Vigliante, A ^[1]; von Zimmermann, M; Schneider, J R ^[2]; Frello, T; Andersen, N H; Madsen, J ^[3]; Buttrey, D J ^[4]; Gibbs, D; Tranquada, J M ^[1]

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1. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, D-22603 Hamburg (Germany)
3. Department of Solid State Physics, Riso/ National Laboratory, DK-4000 Roskilde (Denmark)
4. Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716 (United States)

In the past few years neutron-scattering experiments have shown very intriguing stripe correlations of spins and holes in hole-doped La{sub 2}NiO{sub 4} and La{sub 2}CuO{sub 4}. As yet, no x-ray-diffraction experiment has confirmed the neutron results and the topic is still controversial. In this paper we report the observation of stripe correlations of holes by x-ray diffraction. The experiments were performed in Laue geometry at the hard-x-ray beamline BW5 at HASYLAB on a crystal of La{sub 1.775}Sr{sub 0.225}NiO{sub 4} which was previously studied by neutron diffraction. Temperature dependences of the intensities and wave vectors of the charge-density-modulation peaks were characterized and found to be in good agreement with the neutron-scattering results. Interestingly, weak, temperature-dependent scattering was also observed at positions consistent with nonresonant x-ray magnetic scattering from the spin correlations; however, a definitive determination of its origin remains lacking. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 632607
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 13 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHARGE DENSITY
LANTHANUM OXIDES
MAGNETIC PROPERTIES
NICKEL OXIDES
SPIN
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE
X-RAY DIFFRACTION