Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-11-24
Physics
Condensed Matter
Strongly Correlated Electrons
5 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.92.237204
We have utilized the resonant x-ray diffraction technique at the Mn L-edge in order to directly compare magnetic and orbital correlations in the Mn sub-lattice of Pr0.6Ca0.4MnO3. The resonant line shape is measured below T_OO ~ 240 K at the orbital ordering wave vector (0,1/2,0), and below T_N ~ 175 K at the antiferromagnetic wave vector (1/2,0,0). Comparing the width of the super-lattice peaks at the two wavevectors, we find that the correlation length of the magnetism exceeds that of the orbital order by nearly a factor of two. Furthermore, we observe a large (~ 3 eV) shift in spectral weight between the magnetic and orbital line shapes, which cannot be explained within the classic Goodenough picture of a charge-ordered ground state. To explain the large shift, we calculate the resonant line shapes for orbital and magnetic diffraction based on a relaxed charge-ordered model.
Abbamonte Peter
Grenier Stephane
Hill John P.
Kim Y-J.
McMorrow D. F.
No associations
LandOfFree
Soft x-ray resonant diffraction study of magnetic and orbital correlations in a manganite near half-doping does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Soft x-ray resonant diffraction study of magnetic and orbital correlations in a manganite near half-doping, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft x-ray resonant diffraction study of magnetic and orbital correlations in a manganite near half-doping will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-670158