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Title: Phonon-magnon interactions in BCC iron: A combined molecular and spin dynamics study

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4863488· OSTI ID:1121810
 [1];  [2];  [1];  [1];  [1];  [1];  [1]
  1. ORNL
  2. University of Georgia, Athens, GA
+ Show Author Affiliations

Combining an atomistic many-body potential with a classical spin Hamiltonian pa- rameterized by first principles calculations, molecular-spin dynamics computer sim- ulations were performed to investigate phonon-magnon interactions in BCC iron. Results obtained for spin-spin and density-density dynamic structure factors show that noticeable softening and damping of magnon modes occur due to the presence of lattice vibrations. Furthermore, as a result of the phonon-magnon coupling, addi- tional longitudinal spin wave excitations are observed, with the same frequencies as the longitudinal phonon modes.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
DE-AC05-00OR22725
OSTI ID:
1121810
Journal Information:
Journal of Applied Physics, Vol. 115, Issue 17; ISSN 0021-8979
Country of Publication:
United States
Language:
English

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Cited By (3)

Dynamic simulation of structural phase transitions in magnetic iron journal September 2017
Reinventing atomistic magnetic simulations with spin-orbit coupling text January 2016
Collective dynamics in atomistic models with coupled translational and spin degrees of freedom text January 2017

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