Abstract
The temperature dependence of charge order in Fe2OBO3 was investigated by resistivity and differential scanning calorimetry measurements, Mössbauer spectroscopy, and synchrotron x-ray scattering, revealing an intermediate phase between room temperature and 340K, characterized by coexisting mobile and immobile carriers, and by incommensurate superstructure modulations with temperature-dependent propagation vector (12,0,τ). The incommensurate modulations arise from specific antiphase boundaries with low energy cost due to geometrical charge frustration.
Original language | English |
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Article number | 256402 |
Journal | Physical Review Letters |
Volume | 99 |
Issue number | 25 |
DOIs | |
State | Published - Dec 19 2007 |
Externally published | Yes |