Journal article
Large anisotropy in colossal magnetoresistance of charge orbital ordered epitaxial Sm0.5Ca0.5MnO3 films
Thermo Ceramics, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Chinese Academy of Sciences4
We investigated the structure and magnetotransport properties of Sm0.5Ca0.5MnO3 (SCMO) films epitaxially grown on (011)-oriented SrTiO3 substrates, which exhibited clear charge/orbital ordering transition. A significant anisotropy of ~1000 in the colossal magnetoresistance (CMR) effect was observed in the films with a thickness between 50 and 80 nm, which was distinctly different from the basically isotropic CMR effect in bulk SCMO.
The large anisotropy in the CMR can be ascribed to the intrinsic asymmetric strain in the film, which plays an important role in tuning the spin–orbit coupling in manganite films. The origin of the peculiar CMR effect is discussed.
| Language: | English |
|---|---|
| Year: | 2009 |
| Pages: | 442001 |
| ISSN: | 1361648x and 09538984 |
| Types: | Journal article |
| DOI: | 10.1088/0953-8984/21/44/442001 |
| ORCIDs: | Chen, Yunzhong and Pryds, Nini |
