5 papers
Mechanisms of skyrmion collapse revealed by sub-nm maps of the transition rate
Florian Muckel, Stephan von Malottki, Christian Holl +5
Magnetic skyrmions are key candidates for novel memory, logic, and neuromorphic computing. An essential property is their topological protection caused by the whirling spin texture…
Skyrmion lifetimes in ultrathin films
Stephan von Malottki, Pavel F. Bessarab, Soumyajyoti Haldar +2
We show that thermal stability of magnetic skyrmions can be strongly affected by entropic effects. The lifetimes of isolated skyrmions in atomic Pd/Fe bilayers on Ir(111) and on Rh…
First-principles prediction of sub-10 nm skyrmions in Pd/Fe bilayers on Rh(111)
Soumyajyoti Haldar, Stephan von Malottki, Sebastian Meyer +2
We show that stable skyrmions with diameters of a few nanometers can emerge in atomic Pd/Fe bilayers on the Rh(111) surface. Based on density functional theory we calculate the exc…
Domain walls and Dzyaloshinskii-Moriya interaction in epitaxial Co/Ir(111) and Pt/Co/Ir(111)
Marco Perini, Sebastian Meyer, Bertrand Dupé +5
We use spin-polarized scanning tunneling microscopy and density functional theory (DFT) to study domain walls (DWs) and the Dzyaloshinskii-Moriya interaction (DMI) in epitaxial fil…
Enhanced skyrmion stability due to exchange frustration
S. von Malottki, B. Dupé, P. F. Bessarab +2
Skyrmions are localized, topologically non-trivial spin structures which have raised high hopes for future spintronic applications. A key issue is skyrmion stability with respect t…