TITLE

Large magnetoresistance in magnetically frustrated ruthenates

AUTHOR(S)
Mamchik, A.; Chen, I.-W.
PUB. DATE
January 2003
SOURCE
Applied Physics Letters;1/27/2003, Vol. 82 Issue 4, p613
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A large negative magnetoresistance effect is found in Fe-doped ruthenates of perovskite and layered perovskite structures. These new materials are magnetically glassy, and can be derived from a parent compound that is either magnetic or nonmagnetic. The magnetoresistance is nearly linear with the magnetic field up to 9 T and is stronger at lower temperature. Atomic-level spin valves associated with Fe cations on B sites that regulate electron transport in response to an external magnetic field are suggested to be the mechanism responsible.
ACCESSION #
8954561

 

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