31 citations · 80 across the 10 of their papers we have counts for
10 papers
Extended Landau--Lifshitz equation for nanomagnets: a path-integral derivation of surface-induced magnetization nutation
H. Kachkachi, P. Thibaudeau
An effective dynamical equation for the magnetization of a nanomagnet with surface anisotropy is derived from an atomistic spin Hamiltonian using the spin coherent-state path integ…
Specific absorption rate of uniaxial single-domain nanomagnets: stochastic spin dynamics versus linear response theory
H. Kachkachi
We compute the specific absorption rate of a uniaxial single-domain nanomagnet driven by an alternating magnetic field by two methods: i) direct numerical integration of the stocha…
Local-to-global heating crossover in chains of nanomagnets: A two-scale analytical framework
H. Kachkachi
We develop a two-scale analytical formalism to study heat generation and thermal transport in one-dimensional systems of nanomagnets subjected to a uniform alternating magnetic fie…
Effect of spin disorder on the specific loss power of a nanomagnet
A. Michels, H. Kachkachi
Spin non-collinearities in magnetic nanostructures arise from a variety of sources, including structural defects, finite-size effects, boundary or surface effects, Dzyaloshinskii-M…
Magnetization nutation in magnetic semiconductors: Effective spin model with anisotropic RKKY exchange interaction
H. Kachkachi
We demonstrate that the magnetization in magnetic semiconductors exhibits nutational motion when subjected to an external magnetic field. This behavior originates from the splittin…
Signature of surface anisotropy in the spin-flip neutron scattering cross section of spherical nanoparticles: atomistic simulations and analytical theory
Michael P. Adams, Evelyn Pratami Sinaga, Hamid Kachkachi +1
We investigate the signature of magnetic surface anisotropy in nanoparticles in their spin-flip neutron scattering cross section. Taking into account the isotropic exchange interac…