Zobrazeno 1 - 10
of 36
pro vyhledávání: '"von Malottki, Stephan"'
Autor:
Goerzen, Moritz A., von Malottki, Stephan, Meyer, Sebastian, Bessarab, Pavel F., Heinze, Stefan
Magnetic skyrmions have raised high hopes for future spintronic devices. For many applications it would be of great advantage to have more than one metastable particle-like texture available. The coexistence of skyrmions and antiskyrmions has been pr
Externí odkaz:
http://arxiv.org/abs/2305.13018
Theoretical calculations of thermally activated decay of skyrmions in systems comprising several magnetic monolayers are presented, with a special focus on bilayer systems. Mechanisms of skyrmion collapse are identified and corresponding energy barri
Externí odkaz:
http://arxiv.org/abs/2108.07109
Autor:
Muckel, Florian, von Malottki, Stephan, Holl, Christian, Pestka, Benjamin, Pratzer, Marco, Bessarab, Pavel F., Heinze, Stefan, Morgenstern, Markus
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 as described by a robust integer winding number. However, the realiza
Externí odkaz:
http://arxiv.org/abs/2004.07178
Autor:
Varentcova, Anastasiia S., von Malottki, Stephan, Potkina, Maria N., Kwiatkowski, Grzegorz, Heinze, Stefan, Bessarab, Pavel F.
Publikováno v:
Npj Comput. Mater. 6, 193 (2020)
Breaking the dilemma between small size and room temperature stability is a necessary prerequisite for skyrmion-based information technology. Here we demonstrate by means of rate theory and an atomistic spin Hamiltonian that the stability of isolated
Externí odkaz:
http://arxiv.org/abs/2002.05285
Transition-metal interfaces and multilayers are a very promising class of systems to realize nanometer-sized, stable magnetic skyrmions for future spintronic devices. For room temperature applications it is crucial to understand the interactions whic
Externí odkaz:
http://arxiv.org/abs/1912.03474
Autor:
Meyer, Sebastian, Perini, Marco, von Malottki, Stephan, Kubetzka, André, Wiesendanger, Roland, von Bergmann, Kirsten, Heinze, Stefan
Due to their exceptional topological and dynamical properties magnetic skyrmions - localized stable spin structures on the nanometre scale - show great promise for future spintronic applications. To become technologically competitive, isolated skyrmi
Externí odkaz:
http://arxiv.org/abs/1903.02258
Publikováno v:
Phys. Rev. B 99, 060409 (2019)
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(111) are calculated in the framework of harmonic transition state the
Externí odkaz:
http://arxiv.org/abs/1811.12067
Autor:
Haldar, Soumyajyoti, von Malottki, Stephan, Meyer, Sebastian, Bessarab, Pavel F., Heinze, Stefan
Publikováno v:
Phys. Rev. B 98, 060413 (2018)
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 exchange and the Dzyaloshinskii-Moriya interaction as well as the magneto
Externí odkaz:
http://arxiv.org/abs/1806.06234
Trochoidal motion and pair generation in skyrmion and antiskyrmion dynamics under spin-orbit torques
Autor:
Ritzmann, Ulrike, von Malottki, Stephan, Kim, Joo-Von, Heinze, Stefan, Sinova, Jairo, Dupé, Bertrand
Skyrmions and antiskyrmions in magnetic ultrathin films are characterised by a topological charge describing how the spins wind around their core. This topology governs their response to forces in the rigid core limit. However, when internal core exc
Externí odkaz:
http://arxiv.org/abs/1803.00534
Autor:
Perini, Marco, Meyer, Sebastian, Dupé, Bertrand, von Malottki, Stephan, Kubetzka, André, von Bergmann, Kirsten, Wiesendanger, Roland, Heinze, Stefan
Publikováno v:
Phys. Rev. B 97, 184425 (2018)
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 films of Co/Ir(111) and Pt/Co/Ir(111). Our measurements reveal DWs with f
Externí odkaz:
http://arxiv.org/abs/1802.01975