Breaking of Galilean Invariance in the Hydrodynamic Formulation of Ferromagnetic Thin Films.

@article{Iacocca2017BreakingOG,
  title={Breaking of Galilean Invariance in the Hydrodynamic Formulation of Ferromagnetic Thin Films.},
  author={Ezio Iacocca and Thomas J. Silva and Mark A. Hoefer},
  journal={Physical review letters},
  year={2017},
  volume={118 1},
  pages={
          017203
        }
}
Microwave magnetodynamics in ferromagnets are often studied in the small-amplitude or weakly nonlinear regime corresponding to modulations of a well-defined magnetic state. However, strongly nonlinear regimes, where the aforementioned approximations are not applicable, have become experimentally accessible. By reinterpreting the governing Landau-Lifshitz equation of motion, we derive an exact set of equations of dispersive hydrodynamic form that are amenable to analytical study even when full… 

Figures from this paper

Spin-Injection-Generated Shock Waves and Solitons in a Ferromagnetic Thin Film
Unsteady nonlinear magnetization dynamics are studied in an easy-plane ferromagnetic channel subject to spin injection at one edge. The Landau–Lifshitz equation is known to support steady-state
Symmetry-broken dissipative exchange flows in thin-film ferromagnets with in-plane anisotropy
Planar ferromagnetic channels have been shown to theoretically support a long-range ordered and coherently precessing state where the balance between local spin injection at one edge and damping
Hydrodynamic description of long-distance spin transport through noncollinear magnetization states: Role of dispersion, nonlinearity, and damping
Nonlocal compensation of magnetic damping by spin injection has been theoretically shown to establish dynamic, noncollinear magnetization states that carry spin currents over micrometer distances.
Magnonic Band Structure Established by Chiral Spin-Density Waves in Thin-Film Ferromagnets
Recent theoretical studies have demonstrated the possibility to excite and sustain noncollinear magnetization states in ferromagnetic nanowires. The resulting state is referred to as a spin-density
Controllable vortex shedding from dissipative exchange flows in ferromagnetic channels
Ferromagnetic channels subject to spin injection at one extremum sustain long-range coherent textures that carry spin currents known as dissipative exchange flows (DEFs). In the weak injection
Heisenberg ferromagnetism as an evolution of a spherical indicatrix: Localized solutions and elliptic dispersionless reduction
A geometrical formulation of Heisenberg ferromagnetism as an evolution of a curve on the unit sphere in terms of intrinsic variables is provided and investigated. Given a vortex filament moving in an
Breathers and rogue waves in a ferromagnetic thin film with the Dzyaloshinskii-Moriya interaction
Abstract.We report a theoretical research on nonlinear localized excitations in a ferromagnetic thin film with an interfacial Dzyaloshinskii-Moriya interaction. Employing the Generalized Darboux
Evolution of initial discontinuities in the Riemann problem for the Kaup-Boussinesq equation with positive dispersion.
TLDR
This work considers the space-time evolution of initial discontinuities of depth and flow velocity for an integrable version of the shallow water Boussinesq system introduced by Kaup and describes its periodic solutions and the corresponding Whitham modulation equations.
From chaotic spin dynamics to noncollinear spin textures in YIG nanofilms by spin-current injection
In this article I report about a numerical investigation of nonlinear spin dynamics in a magnetic thin-film, made of Yttrium-Iron-Garnet (YIG). This film is exposed to a small in-plane oriented
Transport properties of spin superfluids: Comparing easy-plane ferromagnets and antiferromagnets
We present a study on spin-superfluid transport based on an atomistic, classical spin model. Easy-plane ferro- as well as antiferromagnets are considered, which allows for a direct comparison of
...
...

References

SHOWING 1-10 OF 77 REFERENCES
Nonlinear Magnetization Dynamics in Nanosystems
The Theory of Magnetism Made Simple:An Introduction To Physical Concepts And To Some Useful Mathematical Methods
The original edition of "The Theory of Magnetism" developed the various relevant topics using modern methods adapted for the many-body problem. It presented and taught the fermionic field theory
Linear and nonlinear waves
TLDR
The study of waves can be traced back to antiquity where philosophers, such as Pythagoras, studied the relation of pitch and length of string in musical instruments and the subject of classical acoustics was laid down and presented as a coherent whole by John William Strutt in his treatise Theory of Sound.
Wave Turbulence Under Parametric Excitation
. . . . . . . . . . . . . . 6 Advanced S-Theory: Supplementary Sections 121 6.1 Ground State Evolution of System . . . . . . . . . . . . . . . . . with Increasing Pumping Amplitude 123 6.1.1 Ground
: 4
  • P. Kam, S. Liew
  • »Aufklärung« als Periodenbegriff der Ideologiegeschichte
  • 1973
Tels que des flots dans un grand fleuve, nous avons chacun un petit mouvement et nous faisons un peu de bruit dans le large courant qui nous emporte; mais nous allons avec les autres et nous
Advances in Physics 59
  • 181
  • 2010
Phys
  • Lett. A 375, 517
  • 2011
Phys
  • Rev. A 74, 023623
  • 2006
Bose-Einstein Condensation in Dilute Gasses (Cambridge
  • 2002
...
...