Chiral damping of DWs

Chiral damping of magnetic domain walls.

Emilie Jué, C. K. Safeer, Marc Drouard, Alexandre Lopez, Paul Balint, Liliana Buda-Prejbeanu, Olivier Boulle, Stephane Auffret, Alain Schuhl, Aurelien Manchon, Ioan Mihai Miron & Gilles Gaudin

Nature Materials AOL (2015)

Graphic illustration of the asymmetric DW dynamics in PMA materials.

Damping ans moment of inertia effects in 1st principles calculations

Atomistic Spin Dynamic Method with both Damping and Moment of Inertia Effects Included from First Principles.
Satadeep Bhattacharjee, Lars Nordström, and Jonas Fransson
Phys. Rev. Lett. 108, 057204 (2012)

The three contributions in the generalized LLG equation, the bare precession arising from the effective magnetic field, and the superimposed effects from the Gilbert damping and the moment of inertia.

Control of damping with metamaterials

Control of Gilbert damping using magnetic metamaterials.
Chiharu Mitsumata, Satoshi Tomita
Phys. Rev. B 84, 174421 (2011)

Comparison between Model 2 (green line and blue circles) and Model 3 (pink line and red triangles) when
r0 = 10. Effective Gilbert damping factor α  is obtained from the fitting curves.

Magnon damping from DFT

Different dimensionality trends in the Landau damping of magnons in iron, cobalt, and nickel: Time-dependent density functional study.
Paweł Buczek, Arthur Ernst, and Leonid M. Sandratskii
Phys. Rev. B 84, 174418 (2011)

Spin waves of fcc Co. Solid circles correspond to ω0(q), while the error bars denote full width at  half maximum (FWHM) of the peak. Solid line denotes SW energies obtained from MFT. Solid triangles stand for the experimental estimation of the dispersion relation by Balash.

LLB model of ultrafast magnetization dynamics

Ultrafast magnetization dynamics rates within the Landau-Lifshitz-Bloch model.
U. Atxitia and O. Chubykalo-Fesenko
Phys. Rev. B 84, 144414 (2011)

Characteristic time scales in ultrafast laser induced magnetization dynamics experiments.

Gilbert damping from ab initio

Ab Initio Calculation of the Gilbert Damping Parameter via the Linear Response Formalism.
H. Ebert, S. Mankovsky, D. Ködderitzsch, P. J. Kelly
Phys. Rev. Lett. 107, 066603 (2011)

Gilbert damping parameter for bcc Fe1-xCox as a function of Co concentration.

Magnonic frequency and damping in multilayers

Tunable magnonic frequency and damping in [Co/Pd]8 multilayers with variable Co layer thickness
S. Pal, B. Rana, O. Hellwig, T. Thomson, and A. Barman
Appl. Phys. Lett. 98, 082501 (2011)

(a) The time-resolved Kerr rotation data after a biexponential background subtraction and (b) the corresponding FFT spectra are shown for[Co/Pd]8 films with different Co layer thickness tCo.