72 citations · 540 across the 20 of their papers we have counts for
8 papers · 1 filter
Two-dimensional Heisenberg antiferromagnet in a transverse field
P. J. Jensen, K. H. Bennemann, D. K. Morr +1
We investigate the magnetic reorientation in a two-dimensional anisotropic antiferromagnet due to a transverse magnetic field. Using a many-body Green's function approach, we show…
Magnetic reordering in the vicinity of a ferromagnetic/antiferromagnetic interface
P. J. Jensen, H. Dreysee, Miguel Kiwi
The magnetic arrangement in the vicinity of the interface between a ferromagnet and an antiferromagnet is investigated, in particular its dependence on the exchange couplings and t…
Anisotropic susceptibility of ferromagnetic ultrathin Co films on vicinal Cu
P. J. Jensen, S. Knappmann, W. Wulfhekel +1
We measure the magnetic susceptibility of ultrathin Co films with an in-plane uniaxial magnetic anisotropy grown on a vicinal Cu substrate. Above the Curie temperature the influenc…
In-plane dipole coupling anisotropy of a square ferromagnetic Heisenberg monolayer
M. Dantziger, B. Glinsmann, S. Scheffler +2
In this study we calculate the dipole-coupling-induced quartic in-plane anisotropy of a square ferromagnetic Heisenberg monolayer. This anisotropy increases with an increasing temp…
Quantum Monte Carlo simulation of thin magnetic films
P. Henelius, P. Fröbrich, P. J. Kuntz +2
The stochastic series expansion quantum Monte Carlo method is used to study thin ferromagnetic films, described by a Heisenberg model including local anisotropies. The magnetizatio…
Theory for the reduction of products of spin operators
P. J. Jensen, F. Aguilera-Granja
In this study we show that the sum of the powers of arbitrary products of quantum spin operators such as can be reduced by one unit, if this sum is equal to…
Field-induced magnetic reorientation and effective anisotropy of a ferromagnetic monolayer within spin wave theory
P. Fröbrich, P. J. Jensen, P. J. Kuntz
The reorientation of the magnetization of a ferromagnetic monolayer is calculated with the help of many-body Green's function theory. This allows, in contrast to other spin wave th…
'Theory for the enhanced induced magnetization in coupled magnetic trilayers in the presence of spin fluctuations'
P. J. Jensen, K. H. Bennemann, P. Poulopoulos +3
Motivated by recent experiments, the effect of the interlayer exchange interaction on the magnetic properties of coupled Co/Cu/Ni trilayers is studied theoretically. He…