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Title: Collective dynamics in atomistic models with coupled translational and spin degrees of freedom

Journal Article · · Physical Review B
 [1];  [2];  [3];  [3];  [4]
  1. Univ. of Georgia, Athens, GA (United States). Center for Simulational Physics; Mississippi State Univ., Mississippi State, MS (United States). Dept. of Physics and Astronomy
  2. Univ. of North Carolina, Asheville, NC (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Univ. of Georgia, Athens, GA (United States). Center for Simulational Physics

When using an atomistic model that simultaneously treats the dynamics of translational and spin degrees of freedom, we perform combined molecular and spin dynamics simulations to investigate the mutual influence of the phonons and magnons on their respective frequency spectra and lifetimes in ferromagnetic bcc iron. Furthermore, by calculating the Fourier transforms of the space- and time-displaced correlation functions, the characteristic frequencies and the linewidths of the vibrational and magnetic excitation modes were determined. A comparison of the results with that of the stand-alone molecular dynamics and spin dynamics simulations reveals that the dynamic interplay between the phonons and magnons leads to a shift in the respective frequency spectra and a decrease in the lifetimes. Moreover, in the presence of lattice vibrations, additional longitudinal magnetic excitations were observed with the same frequencies as the longitudinal phonons.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Defect Physics in Structural Materials (CDP)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1346687
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 1 Vol. 95; ISSN 2469-9950; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (73)

Million-Atom Molecular Dynamics Simulations of Magnetic Iron journal November 2007
Lattice vibrations in iron at 296°K journal April 1967
The art of molecular dynamics simulation journal August 1996
Itinerant electron magnetism journal February 1983
Fast spin dynamics algorithms for classical spin systems journal June 1998
Self diffusion anomaly in ferromagnetic metals: A density-functional-theory investigation of magnetically ordered and disordered Fe and Co journal May 2014
Spin-lattice dynamics study of vacancy formation and migration in ferromagnetic BCC iron journal September 2013
Temperature dependence of enthalpies and entropies of formation and migration of mono-vacancy in BCC iron journal December 2014
Million-atom molecular dynamics simulations of magnetic iron journal February 2007
Vibrational thermodynamics of materials journal May 2010
The Art of Molecular Dynamics Simulation journal March 2000
The Art of Molecular Dynamics Simulation book January 2004
Phonon properties of graphene derived from molecular dynamics simulations journal August 2015
Molecular dynamics study of structural, mechanical, and vibrational properties of crystalline and amorphous Ga1−xInxAs alloys journal September 2003
Equation of State Calculations by Fast Computing Machines journal June 1953
Domain size effects in molecular dynamics simulation of phonon transport in silicon journal October 2006
Measurements of the magnetic excitations above T c in iron and nickel (invited) journal April 1985
Lattice dynamics and vibrational spectra of polythiophene. I. Oligomers and polymer journal January 1991
Phonon-magnon interactions in body centered cubic iron: A combined molecular and spin dynamics study journal May 2014
Spin-lattice dynamics simulation of external field effect on magnetic order of ferromagnetic iron journal March 2014
Investigating the magnetovolume effect in isotropic body-centered-cubic iron using spin-lattice dynamics simulations journal August 2014
Itinerant electron magnetism journal April 1981
Spin dynamics simulations of classical ferro- and antiferromagnetic model systems: comparison with theory and experiment journal January 1999
A ‘magnetic’ interatomic potential for molecular dynamics simulations journal October 2005
A `magnetic' interatomic potential for molecular dynamics simulations. journal May 2007
Combined molecular dynamics-spin dynamics simulations of bcc iron journal March 2014
Scattering of Neutrons by an Anharmonic Crystal journal December 1962
Phonon Dispersion Relation for Iron journal October 1967
Critical and Spin-Wave Scattering of Neutrons from Iron journal March 1969
Spin Motions in a Classical Ferromagnet journal May 1969
Temperature dependence of the magnetic excitations in iron journal April 1975
Spin-dynamics study of the classical ferromagnetic XY chain journal April 1990
Phonon dispersion of the bcc phase of group-IV metals. I. bcc titanium journal May 1991
Phonon dispersion of the bcc phase of group-IV metals. II. bcc zirconium, a model case of dynamical precursors of martensitic transitions journal May 1991
Spin-dynamics study of the dynamic critical behavior of the three-dimensional classical Heisenberg ferromagnet journal February 1994
Effect of topological disorder on the itinerant magnetism of Fe and Co journal April 1995
Magnetically induced crystal structure and phase stability in Fe 1 − c Co c journal August 1996
Martensite-austenite transition and phonon dispersion curves of Fe 1 − x Ni x studied by molecular-dynamics simulations journal March 1998
Ab initio study of the martensitic bcc-hcp transformation in iron journal September 1998
Ab initio full-potential study of the structural and magnetic phase stability of iron journal August 1999
Spin-dynamics simulations of the magnetic dynamics of RbMnF 3 and direct comparison with experiment journal January 2000
Collective dynamic properties in simple crystals: Influence of the structural disorder journal December 2004
Non-Fourier heat conduction in a single-walled carbon nanotube: Classical molecular dynamics simulations journal May 2006
Large-scale simulation of the spin-lattice dynamics in ferromagnetic iron journal July 2008
Longitudinal magnetic fluctuations in Langevin spin dynamics journal August 2012
Effect of lattice vibrations on magnetic phase transition in bcc iron journal December 2012
Dynamic magnetocaloric effect in bcc iron and hcp gadolinium journal July 2014
Magnon thermal mean free path in yttrium iron garnet journal August 2014
Spin-wave multiple excitations in nanoscale classical Heisenberg antiferromagnets journal February 2015
Reinventing atomistic magnetic simulations with spin-orbit coupling journal February 2016
Hubbard-like Hamiltonians for interacting electrons in s , p , and d orbitals journal February 2016
Dynamical temperature for spin systems journal April 2000
Magnetic phase transition in coupled spin-lattice systems: A replica-exchange Wang-Landau study journal October 2016
Effect of the α − γ Phase Transition on the Stability of Dislocation Loops in bcc Iron journal April 2008
High Thermal Conductivity of Single Polyethylene Chains Using Molecular Dynamics Simulations journal December 2008
Spin-Seebeck Effect: A Phonon Driven Spin Distribution journal May 2011
Microscopic Theory of the Temperature-Pressure Phase Diagram of Iron journal January 1983
Magnons and Magnon-Phonon Interactions in Iron journal September 1999
Longitudinal Magnetic Excitations in Classical Spin Systems journal September 2000
Algorithm for Molecular Dynamics Simulations of Spin Liquids journal January 2001
Spin Waves in Paramagnetic bcc Iron: Spin Dynamics Simulations journal August 2005
Molecular and spin dynamics simulations using modern integration methods journal July 2005
Itinerant Electron Magnetism journal August 1984
Longitudinal spin fluctuations in the antiferromagnet MnF 2 studied by polarized neutron scattering journal November 2002
Algorithm for Molecular Dynamics Simulations of Spin Liquids text January 2001
Equation of state calculations by fast computing machines report March 1953
Hubbard-like Hamiltonians for interacting electrons in s, p and d orbitals text January 2015
Magnetic phase transition in coupled spin-lattice systems: A replica-exchange Wang-Landau study text January 2016
Reinventing atomistic magnetic simulations with spin-orbit coupling text January 2016
Algorithm for molecular dynamics simulations of spin liquids text January 2000
Spin waves in paramagnetic BCC iron: spin dynamics simulations text January 2005
Fast spin dynamics algorithms for classical spin systems text January 1998
Longitudinal magnetic excitations in classical spin systems text January 1999

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