199 citations · 1.5k across the 27 of their papers we have counts for
27 papers
Controlling stable Bloch points with electric currents
Martin Lang, Swapneel Amit Pathak, Samuel J. R. Holt +2
The Bloch point is a point singularity in the magnetisation configuration, where the magnetisation vanishes. It can exist as an equilibrium configuration and plays an important rol…
Simulating Bloch points using micromagnetic and Heisenberg models
Thomas Brian Winkler, Marijan Beg, Martin Lang +2
Magnetic Bloch points (BPs) are highly confined magnetization configurations, that often occur in transient spin dynamics processes. However, opposing chiralities of adjacent layer…
Numerical simulation projects in micromagnetics with Jupyter
Martin Lonsky, Martin Lang, Samuel Holt +6
We report a case study where an existing materials science course was modified to include numerical simulation projects on the micromagnetic behavior of materials. The Ubermag micr…
Bloch points in nanostrips
Martin Lang, Marijan Beg, Ondrej Hovorka +1
Complex magnetic materials hosting topologically non-trivial particle-like objects such as skyrmions are under intensive research and could fundamentally change the way we store an…
Megahertz-rate Ultrafast X-ray Scattering and Holographic Imaging at the European XFEL
Nanna Zhou Hagström, Michael Schneider, Nico Kerber +97
The advent of X-ray free-electron lasers (XFELs) has revolutionized fundamental science, from atomic to condensed matter physics, from chemistry to biology, giving researchers acce…
PyBryt: auto-assessment and auto-grading for computational thinking
Christopher Pyles, Francois van Schalkwyk, Gerard J. Gorman +4
We continuously interact with computerized systems to achieve goals and perform tasks in our personal and professional lives. Therefore, the ability to program such systems is a sk…
Ubermag: Towards more effective micromagnetic workflows
Marijan Beg, Martin Lang, Hans Fangohr
Computational micromagnetics has become an essential tool in academia and industry to support fundamental research and the design and development of devices. Consequently, computat…
Using Jupyter for reproducible scientific workflows
Marijan Beg, Juliette Taka, Thomas Kluyver +4
Literate computing has emerged as an important tool for computational studies and open science, with growing folklore of best practices. In this work, we report two case studies -…
Fidimag -- a finite difference atomistic and micromagnetic simulation package
Marc-Antonio Bisotti, David Cortés-Ortuño, Ryan A. Pepper +4
Fidimag is an open-source scientific code for the study of magnetic materials at the nano- or micro-scale using either atomistic or finite difference micromagnetic simulations, whi…
Testing with Jupyter notebooks: NoteBook VALidation (nbval) plug-in for pytest
Hans Fangohr, Vidar Fauske, Thomas Kluyver +5
The Notebook validation tool nbval allows to load and execute Python code from a Jupyter notebook file. While computing outputs from the cells in the notebook, these outputs are co…
A nano-carbon route to rare earth free permanent magnetism
Timothy Moorsom, Shoug Alghamdi, Sean Stansill +9
High coercivity magnets are an important resource for renewable energy, electric vehicles and memory technologies. Most hard magnetic materials incorporate rare-earths such as neod…
Nano-scale magnetic skyrmions and target states in confined geometries
David Cortés-Ortuño, Niklas Romming, Marijan Beg +5
Research on magnetic systems with broken inversion symmetry has been stimulated by the experimental proof of particle-like configurations known as skyrmions, whose non-trivial topo…
Stable and manipulable Bloch point
Marijan Beg, Ryan A. Pepper, David Cortés-Ortuño +6
The prediction of magnetic skyrmions being used to change the way we store and process data has led to materials with Dzyaloshinskii-Moriya interaction coming into the focus of int…
Proposal for a micromagnetic standard problem for materials with Dzyaloshinskii-Moriya interaction
David Cortés-Ortuño, Marijan Beg, Vanessa Nehruji +10
Understanding the role of the Dzyaloshinskii-Moriya interaction (DMI) for the formation of helimagnetic order, as well as the emergence of skyrmions in magnetic systems that lack i…
Skyrmion states in thin confined polygonal nanostructures
Ryan Alexander Pepper, Marijan Beg, David Cortés-Ortuño +8
Recent studies have demonstrated that skyrmionic states can be the ground state in thin-film FeGe disk nanostructures in the absence of a stabilising applied magnetic field. In thi…
Thermal stability and topological protection of skyrmions in nanotracks
David Cortés-Ortuño, Weiwei Wang, Marijan Beg +7
Magnetic skyrmions are hailed as a potential technology for data storage and other data processing devices. However, their stability against thermal fluctuations is an open questio…
User interfaces for computational science: a domain specific language for OOMMF embedded in Python
Marijan Beg, Ryan A. Pepper, Hans Fangohr
Computer simulations are used widely across the engineering and science disciplines, including in the research and development of magnetic devices using computational micromagnetic…
Hysteresis of nanocylinders with Dzyaloshinskii-Moriya interaction
Rebecca Carey, Marijan Beg, Maximilian Albert +6
The potential for application of magnetic skyrmions in high density storage devices provides a strong drive to investigate and exploit their stability and manipulability. Through a…
Dynamics of skyrmionic states in confined helimagnetic nanostructures
Marijan Beg, Maximilian Albert, Marc-Antonio Bisotti +9
In confined helimagnetic nanostructures, skyrmionic states in the form of incomplete and isolated skyrmion states can emerge as the ground state in absence of both external magneti…
Frequency-based nanoparticle sensing over large field ranges using the ferromagnetic resonances of a magnetic nanodisc
Maximilian Albert, Marijan Beg, Dmitri Chernyshenko +4
Using finite element micromagnetic simulations, we study how resonant magnetisation dynamics in thin magnetic discs with perpendicular anisotropy are influenced by magnetostatic co…
Proposal of a micromagnetic standard problem for ferromagnetic resonance simulations
Alexander Baker, Marijan Beg, Gregory Ashton +10
Nowadays, micromagnetic simulations are a common tool for studying a wide range of different magnetic phenomena, including the ferromagnetic resonance. A technique for evaluating r…
Skyrmions in thin films with easy-plane magnetocrystalline anisotropy
Mark Vousden, Maximilian Albert, Marijan Beg +8
We demonstrate that chiral skyrmionic magnetization configurations can be found as the minimum energy state in B20 thin film materials with easy-plane magnetocrystalline anisotropy…
Phenomenological description of the nonlocal magnetization relaxation in magnonics, spintronics, and domain-wall dynamics
Weiwei Wang, Mykola Dvornik, Marc-Antonio Bisotti +8
A phenomenological equation called Landau-Lifshitz-Baryakhtar (LLBar) equation, which could be viewed as the combination of Landau-Lifshitz (LL) equation and an extra "exchange dam…
Driving magnetic skyrmions with microwave fields
Weiwei Wang, Marijan Beg, Bin Zhang +2
We show theoretically by numerically solving the Landau-Lifshitz-Gilbert equation with a classical spin model on a two-dimensional system that both magnetic skyrmions and skyrmion…