Magnon modes and magnon-vortex scattering in two-dimensional easy-plane ferromagnets

BA Ivanov, HJ Schnitzer, FG Mertens, GM Wysin - Physical Review B, 1998 - APS
We calculate the magnon modes in the presence of a vortex on a circular system, combining
analytical calculations in the continuum limit with a numerical diagonalization of the discrete …

Nature of catalytic activities of CoO nanocrystals in thermal decomposition of ammonium perchlorate

L Li, X Sun, X Qiu, J Xu, G Li - Inorganic chemistry, 2008 - ACS Publications
This work addresses the chemical nature of the catalytic activity of X-ray “pure” CoO
nanocrystals. All samples were prepared by a solvothermal reaction route. X-ray diffraction …

Magnetic vortex dynamics

R Antos, YC Otani, J Shibata - Journal of the Physical Society of …, 2008 - journals.jps.jp
We review the recent theoretical and experimental achievements on dynamics of spin
vortices in patterned ferromagnetic elements. We first demonstrate the theoretical …

Spin eigenexcitations of an antiferromagnetic skyrmion

VP Kravchuk, O Gomonay, DD Sheka, DR Rodrigues… - Physical Review B, 2019 - APS
We study spin eigenexcitation of a skyrmion in a collinear uniaxial antiferromagnet by
means of analytical and numerical methods. We found a discrete spectrum of modes which …

Magnon modes for a circular two-dimensional easy-plane ferromagnet in the cone state

BA Ivanov, GM Wysin - Physical Review B, 2002 - APS
We calculate the magnon modes in the presence of a vortex in a circular easy-plane
ferromagnet with a magnetic field perpendicular to the plane of the magnet. We also …

Magnetic vortex mass in two-dimensional easy-plane magnets

GM Wysin - Physical Review B, 1996 - APS
The dynamical mass of a vortex in a two-dimensional easy-plane magnetic model is
calculated from the translational mode spectrum and an effective force constant for the …

Vortex dynamics in two-dimensional antiferromagnets

S Komineas, N Papanicolaou - Nonlinearity, 1998 - iopscience.iop.org
Vortices or merons are the relevant topological solitons in a two-dimensional isotropic
Heisenberg antiferromagnet immersed in a uniform magnetic field. The dynamics of such …

Internal modes and magnon scattering on topological solitons in two-dimensional easy-axis ferromagnets

DD Sheka, BA Ivanov, FG Mertens - Physical Review B, 2001 - APS
We study the magnon modes in the presence of a topological soliton in a two-dimensional
Heisenberg easy-axis ferromagnet. The problem of magnon scattering on the soliton with …

Solitary wave excitations of skyrmion strings in chiral magnets

VP Kravchuk, UK Rößler, J van den Brink, M Garst - Physical Review B, 2020 - APS
Chiral magnets possess topological line excitations where the magnetization within each
cross section forms a skyrmion texture. We study analytically and numerically the low …

Magnetic vortex as a ground state for micron-scale antiferromagnetic samples

EG Galkina, AY Galkin, BA Ivanov, F Nori - Physical Review B—Condensed …, 2010 - APS
Here we consider micron-sized samples with any axisymmetric body shape and made with a
canted antiferromagnet, like hematite or iron borate. We find that its ground state can be a …