Published October 14, 2014
| Published
Journal Article
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Temperature Dependent Magnon-Phonon Coupling in bcc Fe from Theory and Experiment
Abstract
An ab initio based framework for quantitatively assessing the phonon contribution due to magnon-phonon interactions and lattice expansion is developed. The theoretical results for bcc Fe are in very good agreement with high-quality phonon frequency measurements. For some phonon branches, the magnon-phonon interaction is an order of magnitude larger than the phonon shift due to lattice expansion, demonstrating the strong impact of magnetic short-range order even significantly above the Curie temperature. The framework closes the previous simulation gap between the ferro- and paramagnetic limits.
Additional Information
© 2014 American Physical Society. Published 14 October 2014; received 18 May 2014. Funding by the Deutsche Forschungsgemeinschaft (DFG) within the collaborative research center SFB 761 "Stahl—ab initio" and within the priority program SPP 1599, and by the European Research Council under the EU's 7th Framework Programme (No. FP7/2007-2013)/ERC Grant Agreement No. 290998 is gratefully acknowledged. L. M. and B. F. acknowledge support of DOENNSA Award No. DE-NA0001974 and DOE-BES Award No. DE-FG02-99ER45775.Attached Files
Published - PhysRevLett.113.165503.pdf
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PhysRevLett.113.165503.pdf
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Additional details
- Eprint ID
- 52391
- Resolver ID
- CaltechAUTHORS:20141204-112837164
- SFB 761
- Deutsche Forschungsgemeinschaft (DFG)
- SPP 1599
- Deutsche Forschungsgemeinschaft (DFG)
- 290998
- European Research Council 7th Framework Programme (FP7/2007-2013)
- DE-NA0001974
- Department of Energy (DOE)
- DE-FG02-99ER45775
- Department of Energy (DOE)
- Created
-
2014-12-04Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field