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Crossover of angular dependent magnetoresistance with the metal-insulator transition in colossal magnetoresistive manganite films.
- Source :
-
Applied Physics Letters . 9/28/2009, Vol. 95 Issue 13, p132506. 3p. 3 Graphs. - Publication Year :
- 2009
-
Abstract
- The temperature and magnetic field dependence of angular dependent magnetoresistance (AMR) along two orthogonal directions ([100] and [formula]) was investigated in a charge-orbital-ordered Sm0.5Ca0.5MnO3 (SCMO) film grown on (011)-oriented SrTiO3 substrates. A dramatic decrease of AMR magnitude in both directions was observed with the appearance of magnetic-field-induced metal-insulator transition, which further led to a sign crossover in the AMR effect. The AMR crossover may give a direct evidence of the drastic modification of electronic structure or possible orbital reconstruction with the magnetic-destruction of charge/orbital ordering in SCMO films. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MAGNETORESISTANCE
*THIN films
*ELECTRONIC structure
*MAGNETIC fields
*TEMPERATURE
Subjects
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 95
- Issue :
- 13
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 44449133
- Full Text :
- https://doi.org/10.1063/1.3240407