Screened moments and absence of ferromagnetism in FeAl
- Author(s)
- A. Galler, C. Taranto, M. Wallerberger, M. Kaltak, G. Kresse, G. Sangiovanni, A. Toschi, K. Held
- Abstract
While the stoichiometric intermetallic compound FeAl is found to be paramagnetic in experiment, standard band-theory approaches predict the material to be ferromagnetic. We show that this discrepancy can be overcome by a better treatment of electronic correlations with density-functional plus dynamical mean-field theory. Our results show no ferromagnetism down to 100K and since the susceptibility is decreasing at the lowest temperatures studied we also do not expect ferromagnetism at even lower temperatures. This behavior is found to originate from temporal quantum fluctuations that screen short-lived local magnetic moments of 1.6μB on Fe.
- Organisation(s)
- Computational Materials Physics
- External organisation(s)
- Technische Universität Wien, Julius-Maximilians-Universität Würzburg
- Journal
- Physical Review B
- Volume
- 92
- No. of pages
- 7
- ISSN
- 1098-0121
- DOI
- https://doi.org/10.1103/PhysRevB.92.205132
- Publication date
- 11-2015
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103025 Quantum mechanics, 103036 Theoretical physics, 103015 Condensed matter, 103009 Solid state physics
- Keywords
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Condensed Matter Physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/screened-moments-and-absence-of-ferromagnetism-in-feal(675ae7fc-b92f-46d6-92df-f7d2bc5cca92).html