Soliton relaxation in magnets

Baryakhtar, V. G.; Иванов, Б. А.; Sukstanskiı̆, A. L.; Melikhov, Eugene

doi:10.1103/physrevb.56.619

Cited by 62 publications

(39 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The slowly varying field is evaluated along the soliton trajectory h 0 = h 0 ( X(t), t), where d X/dt = V . Similar modulation equations were derived for one-dimensional droplets in [22][23][24] and stationary, two-dimensional droplets ( P ≡ 0) in [24]. Without loss of generality, we limit further discussion to droplet motion in the x direction, so that V = (V, 0) and P = (P, 0).…”

Section: Finite Dimensional Reductionmentioning

confidence: 97%

Propagation and control of nanoscale magnetic-droplet solitons

2012

View full text Add to dashboard Cite

The propagation and controlled manipulation of strongly nonlinear, two-dimensional solitonic states in a thin, anisotropic ferromagnet are theoretically demonstrated. It has been recently proposed that spin-polarized currents in a nanocontact device could be used to nucleate a stationary dissipative droplet soliton. Here, an external magnetic field is introduced to accelerate and control the propagation of the soliton in a lossy medium. Soliton perturbation theory corroborated by two-dimensional micromagnetic simulations predicts several intriguing physical effects, including the acceleration of a stationary soliton by a magnetic field gradient, the stabilization of a stationary droplet by a uniform control field in the absence of spin torque, and the ability to control the soliton's speed by use of a time-varying, spatially uniform external field. Soliton propagation distances approach 10 µm in low loss media, suggesting that droplet solitons could be viable information carriers in future spintronic applications, analogous to optical solitons in fiber optic communications.

show abstract

Section: Finite Dimensional Reductionmentioning

confidence: 97%

Propagation and control of nanoscale magnetic-droplet solitons

2012

View full text Add to dashboard Cite

show abstract

“…There is a number of the papers dedicated to the investigation of the different forms and sources of the damping in the Landau-Lifshitz equation [7][8][9][10][11][12][13][14][15][16]. It was shown [9][10][11][12] that an extension of the LLG equation is needed, but it is unclear whether accounting for other damping terms would describe the magnetization dynamics better due to complexity of many microscopic damping mechanisms.…”

Section: Introductionmentioning

confidence: 99%

“…8 and applied to relaxation of magnetic solitons in bulk magnets. The limits of applicability of the damping terms (1, 2) were established [8]. It was shown that the LL and Gilbert damping terms cannot properly describe relaxation in the magnetic systems with continuously degenerated ground state, for instance, in uniaxial "easy plane" ferromagnets [8].…”

Section: Introductionmentioning

confidence: 99%

“…The limits of applicability of the damping terms (1, 2) were established [8]. It was shown that the LL and Gilbert damping terms cannot properly describe relaxation in the magnetic systems with continuously degenerated ground state, for instance, in uniaxial "easy plane" ferromagnets [8]. Considering a semiphenomenological model of an isolated classical spin interacting with the bath modeled by stochastic Langevin fields in the whole range of temperatures has led to the closed equation of motion for magnetization interpolating between the Landau-Lifshitz and Bloch equations at low and high temperatures -the Landau-Lifshitz-Bloch (LLB) equation [7].…”

Section: Introductionmentioning

confidence: 99%

“…The general phenomenological approach to the magnetic relaxation was formulated in Ref. 8 and applied to relaxation of magnetic solitons in bulk magnets. The limits of applicability of the damping terms (1, 2) were established [8].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effective magnetization damping for a dynamical spin texture in metallic ferromagnet

Sukhostavets

González

Guslienko

2015

Low Temperature Physics

View full text Add to dashboard Cite

An additional magnetization damping for an inhomogeneous spin texture in metallic ferromagnets is calculated on the basis of the s-d exchange model. The effect of conduction electrons on the magnetization dynamics is accounted for the case of slowly varying spin texture within adiabatic approximation by using a coordinate transformation to the local quantization axis. The moving magnetic vortex in a circular nanodot made of permalloy is considered as an example. The dependence of the damping on the dot geometrical sizes is obtained. It is found that the additional damping can reach up to 50% of magnitude of the phenomenological Gilbert damping in the Landau-Lifshitz equation of magnetization motion and should be taken into account for any inhomogeneous spin texture dynamics in ferromagnetic metals.

show abstract

Magnon-Polariton Coupling in a Ferromagnetic Medium

Vivas

2000

phys. stat. sol. (b)

View full text Add to dashboard Cite

show abstract

Soliton relaxation in magnets

Cited by 62 publications

References 6 publications

Propagation and control of nanoscale magnetic-droplet solitons

Propagation and control of nanoscale magnetic-droplet solitons

Effective magnetization damping for a dynamical spin texture in metallic ferromagnet

Magnon-Polariton Coupling in a Ferromagnetic Medium

Contact Info

Product

Resources

About