Incommensurate charge order phase in Fe2OBO3 due to geometrical frustration |
| |
| Authors: | Angst M Hermann R P Schweika W Kim J-W Khalifah P Xiang H J Whangbo M-H Kim D-H Sales B C Mandrus D |
| |
| Affiliation: | Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA. angst@ornl.gov |
| |
| Abstract: | The temperature dependence of charge order in Fe2OBO3 was investigated by resistivity and differential scanning calorimetry measurements, M?ssbauer spectroscopy, and synchrotron x-ray scattering, revealing an intermediate phase between room temperature and 340 K, characterized by coexisting mobile and immobile carriers, and by incommensurate superstructure modulations with temperature-dependent propagation vector (1/2, 0, tau). The incommensurate modulations arise from specific antiphase boundaries with low energy cost due to geometrical charge frustration. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
