Influence of long-range interactions on the switching behavior of particles in an array of ferromagnetic nanostructures
Influence of long-range interactions on the switching behavior of particles in an array of ferromagnetic nanostructures
复制标题
长程相互作用对铁磁纳米结构阵列中粒子切换行为的影响
DOI:
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复制
发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Hans Peter Oepen
中科院分区:
文献类型:
--
作者:
A. Neumann;D. Altwein;Carsten Thönnissen;R. Wieser;A. Berger;A. Meyer;E. Vedmedenko;Hans Peter Oepen
The interaction of Co/Pt nanodots is studied by means of the anomalous Hall-effect. On purpose the system of four dots is driven into a state of instability by applying a magnetic field perpendicular to the easy axis of magnetization. The dots become susceptible to thermal excitation and correlated switching is observed over large distances. The experimental finding is supported by theoretical simulations that reveal the importance of correlations and their influence at large length scales. This unexpected result sheds light on the general behavior of ensembles of systems with small energy barriers like superparamagnetic ensembles or switching of high density bit pattern media around the switching field.
影响因子:
3.2
作者:
Alexandrou M
通讯作者:
Alexandrou M
影响因子:
8.6
作者:
Budrikis, Zoe;Morgan, J. P.;Stamps, R. L.
通讯作者:
Stamps, R. L.