Abstract
High-energy synchrotron x-ray diffraction measurements were carried out on a single crystal of (formula presented) which had been reported to have different magnetic and structural correlations, in order to investigate the origin of this discrepancy more precisely. At low temperature, we observed weak superlattice peaks at (formula presented) which was reported in a previous x-ray work by Cox et al. [Phys. Rev. B 57, 10 750 (1998)]. Therefore, the lattice distortion has not 4 but 5 times the periodicity of the chain structure along c (‖ chain axis) direction. These satellite peaks decreased in intensity with increasing temperature. These observations were interpreted properly in terms of a hole ordering model involving the dimerized state of two (formula presented) while the superlattice peak intensity varied drastically with very little sample surface treatment in the case of low-energy x-ray experiments (formula presented).
Original language | English |
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Pages (from-to) | 1-4 |
Number of pages | 4 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 66 |
Issue number | 1 |
DOIs | |
State | Published - 2002 |
Externally published | Yes |