Journal
PHYSICAL REVIEW B
Volume 64, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.64.092413
Keywords
-
Ask authors/readers for more resources
A clear physics picture of TbBaCo2O5.5 is revealed on the basis of density-functional theory calculations. An anti ferromagnetic (AFM) superexchange coupling between the almost high-spin Co3+ ions competes with a ferromagnetic (FM) interaction mediated by both p-d exchange and double exchange, being responsible for the observed AFM-FM transition. And the metal-insulator transition is accompanied by an xy/xz orbital-ordering transition. Moreover. this picture can be generalized to the whole lanthanide series, and it is predicted that a few room-temperature magnetoresistance materials could be found in LBa(1-x)A(x)Co(2)O(5+delta) (L=Ho, Er, Tm, Yb, Lu; A =Sr, Ca. Mg).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available