- By:
- Xu, S. U.; Angst, Niklaus M; Brinzari, T. V.; Hermann, Raphael; Musfeldt, J.; Christianson, Andrew D; Mandrus, David ; Mcgill, S.; Kim, Jong-Woo; Islam, Z.
- Journal Name:
- Physical Review Letters
- Page Number:
- 227602
- Volume:
- 101
- Issue Number:
- 22
- Publication Date:
- December 8, 2008
- View DOI Listing:
- https://doi.org/10.1103/PhysRevLett.101.227602
Abstract
The cascade of temperature and field-driven transitions in LuFeO was investigated byM�Nossbauer and optical spectroscopies, magnetization, and x-ray scattering. A correlation of Fe2+ ��Fe3+ charge transfer excitations with the 320 K phase transition below which uperstructure reflections appear confirms its association with gradual charge carrier freezing. Fe2+ on-site excitations are sensitive to the 175 K magnetic transition, which Bragg splitting and large magneto optical contrast suggest involes a monoclinic distortion that can be driven by both temperature and magnetic field. PACS numbers: 71.30.+h,75.30.Kz,78.20.Ci,76.70.+y
