Publication Type
Journal
Journal Name
Journal of Physics: Condensed Matter
Publication Date
Page Number
355601
Volume
21
Issue
35
Abstract
Surface magnetic phase transition of a double-exchange model for colossal magnetoresiscance manganites
is studied using a Schwinger-boson mean-field method.
About three unit cell wide surface layers are identified.
The magnetic moment in these layers decreases more rapidly than that in the bulk when temperature is increased.
This behavior is consistent with experimental observations.
Are also discussed implication to the tunneling magnetoresistance effect using manganites and
possible improvement of the magnetoresistance effect near bulk Curie temperature.
