Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1594524 | Solid State Communications | 2010 | 4 Pages |
Abstract
We use the results of first-principles electronic structure calculations and a strong coupling perturbation approach, together with general theoretical arguments, to illustrate the differences in super-exchange interactions between the copper-oxides and iron-pnictides. We provide a possible explanation for the two magnetic ground states within the same theoretical foundation. Contrary to the emerging view that magnetic order in the iron-pnictides is of itinerant nature, we argue that the observed magnetic moment is small because of frustration introduced by the electrons of the Fe orbitals as they compete to impose their preferred magnetic ordering.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Efstratios Manousakis, Jun Ren, Sheng Meng, Efthimios Kaxiras,