TY - JOUR
T1 - Strongly momentum-dependent screening dynamics in La0.5Sr 1.5MnO4 observed with resonant inelastic x-ray scattering
AU - Liu, X.
AU - Seman, T. F.
AU - Ahn, K. H.
AU - Van Veenendaal, Michel
AU - Casa, D.
AU - Prabhakaran, D.
AU - Boothroyd, A. T.
AU - Ding, H.
AU - Hill, J. P.
PY - 2013/5/14
Y1 - 2013/5/14
N2 - We report strongly momentum-dependent short-ranged charge screening dynamics in CE-type charge, orbital, and spin ordered La0.5Sr 1.5MnO4, based on Mn K-edge resonant inelastic x-ray scattering data. Through a comparison with theoretical calculations, we show that the observed momentum dependence reflects highly localized, nearest-neighbor screening of the transient local charge perturbation in this compound with an excitonlike screening cloud, rather than delocalized screening. The size of the screening cloud is estimated to be about 0.4-0.5 interatomic distances.
AB - We report strongly momentum-dependent short-ranged charge screening dynamics in CE-type charge, orbital, and spin ordered La0.5Sr 1.5MnO4, based on Mn K-edge resonant inelastic x-ray scattering data. Through a comparison with theoretical calculations, we show that the observed momentum dependence reflects highly localized, nearest-neighbor screening of the transient local charge perturbation in this compound with an excitonlike screening cloud, rather than delocalized screening. The size of the screening cloud is estimated to be about 0.4-0.5 interatomic distances.
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U2 - 10.1103/PhysRevB.87.201103
DO - 10.1103/PhysRevB.87.201103
M3 - Article
AN - SCOPUS:84877905146
SN - 1098-0121
VL - 87
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 20
M1 - 201103
ER -