2008/10/08 by German Samolyuk, G. D. Samolyuk, Vladimir Antropov +1 · 1 citation
Business, Management and Accounting · Materials Science · Physics and Astronomy · #Corporate Taxation and Avoidance #Iron-based superconductors research #Rare-earth and actinide compounds #cond-mat.mtrl-sci #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.79.052505
arxiv created 2008/10/08 · openalex publication_date 2009/02/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The density-functional spin susceptibility has been analyzed in different phases of CaFe2As2 and compared with similar data for pure d metals. The conditions for the ``no local-moment'' itinerant state with large frustrations are found for the ``collapsed'' phase. This itineracy determines the instability versus the incommensurate magnetic order for the narrow region of wave vectors. For the ambient pressure phase, the local moments on Fe atoms with much less frustrated antiferromagnetic interactions are stabilized and a magnetic short-range or long-range order is developed. The system is close to the point of magnetic instability and spin fluctuations should be included to describe properties of this system.