2024-03-29T12:07:30Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/736692016-02-17T18:47:05Zcom_10261_46com_10261_3com_10261_31col_10261_299col_10261_284
2013-04-05T09:13:15Z
urn:hdl:10261/73669
Incommensurate sinusoidal oxygen modulations in layered manganites La1-xSr1+xMnO4 (x≥0.5)
García, Joaquín
Herrero Martín, Javier
Subías, G.
Blasco, Javier
Andreu, J. S.
Sánchez, María Concepción
We have studied the incommensurate-ordered phase in overdoped La 0.4Sr 1.6MnO 4 by resonant x-ray diffraction at the Mn K edge. Weak resonant superlattice (h±0.2h±0.20) and (h±0.4h±0.40) reflections of the tetragonal structure were found below ∼240K. The energy, azimuth angle, and polarization dependencies of the resonant scattering have revealed sinusoidal modulations of the oxygen motions that are transverse and longitudinal to the tetragonal [110] direction. This result discards (Mn3 +,Mn4 +)-like stripe-type order but point to a charge-density-modulation picture. © 2012 American Physical Society.
2013-04-05T09:13:15Z
2013-04-05T09:13:15Z
2012
2013-04-05T09:13:15Z
artículo
Physical Review Letters 109(10): 107202 (2012)
http://hdl.handle.net/10261/73669
10.1103/PhysRevLett.109.107202
eng
openAccess
American Physical Society