53 citations · 73 across the 8 of their papers we have counts for
8 papers
Classical scattering and fragmentation of clusters of ions in helical confinement
Ansgar Siemens, Peter Schmelcher
We explore the scattering dynamics of classical Coulomb-interacting clusters of ions confined to a helical geometry. Ion clusters of equally charged particles constrained to a heli…
Geometry induced domain-walls of dipole lattices on curved structures
Ansgar Siemens, Peter Schmelcher
We investigate the ground state properties of rectangular dipole lattices on curved surfaces. The curved geometry can `distort' the lattice and lead to dipole equilibrium configura…
Driven toroidal helix as a generalization of Kapitzas pendulum
J. F. Gloy, A. Siemens, P. Schmelcher
We explore a model system consisting of a particle confined to move along a toroidal helix while being exposed to a static potential as well as a driving force due to a harmonicall…
Formation and crossover of multiple helical dipole chains
Ansgar Siemens, Peter Schmelcher
We investigate the classical equilibrium properties and metamorphosis of the ground state of interacting dipoles with fixed locations on a helix. The dipoles are shown to align the…
External field-induced dynamics of a charged particle on a closed helix
Ansgar Siemens, Peter Schmelcher
We investigate the dynamics of a charged particle confined to move on a toroidal helix while being driven by an external time-dependent electric field. The underlying phase space i…
Tunable Order of Helically Confined Charges
Ansgar Siemens, Peter Schmelcher
We investigate a system of equally charged Coulomb-interacting particles confined to a toroidal helix in the presence of an external electric field. Due to the confinement, the par…
Controlled creation and stability of kπ-skyrmions on a discrete lattice
Julian Hagemeister, Ansgar Siemens, Levente Rózsa +2
We determine sizes and activation energies of kπ-skyrmions on a discrete lattice using the Landau- Lifshitz-Gilbert equation and the geodesic nudged elastic band method. The employ…
Minimal Radius of Magnetic Skyrmions: Statics and Dynamics
A. Siemens, Y. Zhang, J. Hagemeister +2
In a broad range of applied magnetic fields and material parameters isolated magnetic skyrmions condense into skyrmion lattices. While the geometry of isolated skyrmions and their…