Current-dependent positive magnetoresistance in Ga-doped La(0.5)Ca(0.5)Mno(3)

Authors
Chen, X Wang, ZH Li, RW Shen, BG Zhao, HW Zhan, WS Chen, JS Zhang, XX
Citation
X. Chen et al., Current-dependent positive magnetoresistance in Ga-doped La(0.5)Ca(0.5)Mno(3), CHIN PHYS, 10(8), 2001, pp. 751-755
Citations number
18
Categorie Soggetti
Physics
Journal title
CHINESE PHYSICS
ISSN journal
10091963 → ACNP
Volume
10
Issue
8
Year of publication
2001
Pages
751 - 755
Database
ISI
SICI code
1009-1963(200108)10:8<751:CPMIGL>2.0.ZU;2-W
Abstract
The magnetic and transport properties of the Ga-doped charge-ordering state La0.5Ca0.5MnO3 have been studied. A current-dependent large positive magne toresistance (1080%) at 5 K was observed. These observations axe interprete d in terms of the spin-dependent tunnelling process between ferromagnetic c lusters embedded in an antiferromagnetic matrix.