Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1516790 | Journal of Physics and Chemistry of Solids | 2011 | 5 Pages |
Abstract
By applying density functional theory, we find strong evidence for an itinerant nature of magnetism in two families of iron pnictides. Furthermore, by employing dynamical mean field theory with continuous time quantum Monte Carlo as an impurity solver, we observe that the antiferromagnetic metal with small magnetic moment naturally arises out of coupling between unfrustrated and frustrated bands. Our results point to a possible scenario for magnetism in iron pnictides where magnetism originates from a strong instability at the momentum vector (π,π,π)(π,π,π) while it is reduced by quantum fluctuations due to the coupling between weakly and strongly frustrated bands.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Yu-Zhong Zhang, Hunpyo Lee, Ingo Opahle, Harald O. Jeschke, Roser Valentí,