, J.
, , M.
, , D.
, , Y.
and Lynn, J.
(2012),
Paramagnetic Spin Correlations in Colossal Magnetoresistive La<sub>0.7</sub>Ca<sub>0.3</sub>MnO<sub>3</sub>, Physical Review B, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910483
(Accessed October 4, 2024)
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Paramagnetic Spin Correlations in Colossal Magnetoresistive La0.7Ca0.3MnO3
Published
Author(s)
, Matthew B. Stone, Dmitry A. Shulyatev, Yakov M. Mukovskii,
Abstract
Neutron spectroscopy measurements reveal dynamic spin correlations throughout the Brillouin zone in the colossal magnetoresistive system La0.7Ca0.3MnO3 at 265 K ({approx}1.03Tc). The long-wavelength behavior is consistent with spin diffusion, yet an additional and unexpected component of the scattering is also observed in low-energy constant-E measurements which takes the form of ridges of strong scattering running along (H 0 0) and equivalent directions. Well defined Q-space correlations are observed in constant-E scans at energies up to at least 28 meV, suggesting robust short-range correlations in the paramagnetic phase.Citation
Physical Review B
Volume
85
Issue
14
Pub Type
Journals
Download Paper
Keywords
colossal magnetoresistance, paramagnetic scattering, isotropic ferromagnets, metallic ferromagnets
Citation
Issues
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Created April 2, 2012, Updated February 19, 2017