884 citations · 1.5k across the 19 of their papers we have counts for
18 papers
Pseudo-spectral Landau-Lifshitz description of magnetization dynamics
Kyle Rockwell, Joel Hirst, Thomas A. Ostler +1
Magnetic materials host a wealth of nonlinear dynamics, textures, and topological defects. This is possible due to the competition between strong nonlinearity and dispersion that a…
Simulations of Magnetization Reversal in FM/AFM Bilayers With THz Frequency Pulses
Joel Hirst, Sergiu Ruta, Jerome Jackson +1
It is widely known that antiferromagnets (AFMs) display a high frequency response in the terahertz (THz) range, which opens up the possibility for ultrafast control of their magnet…
Ultrafast Opto-magnetic Effects in the Extreme Ultraviolet Spectral Range
Martin Hennecke, Clemens von Korff Schmising, Kelvin Yao +20
Coherent light-matter interactions mediated by opto-magnetic phenomena like the inverse Faraday effect (IFE) are expected to provide a non-thermal pathway for ultrafast manipulatio…
Multiscale Modelling of the Antiferromagnet Mn2Au: From ab-initio to Micromagnetics
Joel Hirst, Unai Atxitia, Sergiu Ruta +3
Antiferromagnets (AFMs) are strong candidates for the future spintronic and memory applications largely because of their inherently fast dynamics and lack of stray fields, with Mn2…
Timescales and contribution of heating and helicity effect in helicity-dependent all-optical switching
Guanqi Li, Xiangyu Zheng, Junlin Wang +5
The manipulation of the magnetic direction by using the ultrafast laser pulse is attractive for its great advantages in terms of speed and energy efficiency for information storage…
Hypersonic heat-induced flows of magnons induced by femtosecond laser pulses
Sergiu Ruta, Zuwei Fu, Thomas Ostler +2
In this work, we present evidence for the existence of a magnonic current on the sub-picosecond time-scale in a ferrimagnetic bilayer and its effect on ultrafast spin dynamics. The…
Unifying femtosecond and picosecond single-pulse magnetic switching in GdFeCo
Florian Jakobs, Thomas Ostler, Charles-Henri Lambert +6
Many questions are still open regarding the physical mechanisms behind the magnetic switching in GdFeCo alloys by single optical pulses. Phenomenological models suggest a femtoseco…
Role of Element-Specific Damping on the Ultrafast, Helicity-Independent All-Optical Switching Dynamics in Amorphous (Gd,Tb)Co Thin Films
Alejandro Ceballos, Akshay Pattabi, Amal El-Ghazaly +9
Ultrafast control of the magnetization in ps timescales by fs laser pulses offers an attractive avenue for applications such as fast magnetic devices for logic and memory. However,…
Spin-current-mediated rapid magnon localisation and coalescence after ultrafast optical pumping of ferrimagnetic alloys
E. Iacocca, T-M. Liu, A. H. Reid +31
Sub-picosecond magnetisation manipulation via femtosecond optical pumping has attracted wide attention ever since its original discovery in 1996. However, the spatial evolution of…
Probability distribution of substituted Titanium in RT12 (R = Nd, Sm, T = Fe, Co) structures
Connor Skelland, Thomas Ostler, Samuel Westland +11
We investigated the atomic fill site probability distributions across supercell structures of RT12-xTi (R=Nd, Sm, T=Fe, Co). We use a combined molecular dynamics and Boltzmann dist…
Optical Receiver with Helicity Dependent Switching of Magnetization
Zubair Al Azim, Thomas A. Ostler, Chudong Xu +1
In this work, we propose helicity-dependent switching (HDS) of magnetization of Co/Pt for energy efficient optical receiver. Designing a low power optical receiver for optical-to-e…
Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo
Xianyang Lu, Xiao Zou, Denise Hinzke +10
Using time-resolved magneto-optical Kerr effect (TR-MOKE) method, helicity-dependent all-optical magnetization switching (HD-AOS) is observed in ferrimagnetic TbFeCo films. The the…
The Landau-Lifshitz equation in atomistic models
M. O. A. Ellis, R. F. L. Evans, T. A. Ostler +4
The Landau-Lifshitz (LL) equation, originally proposed at the macrospin level, is increasingly used in Atomistic Spin Dynamic (ASD) models. The models are based on a spin Hamiltoni…
Laser Induced Magnetization Reversal for Detection in Optical Interconnects
Zubair Al Azim, Xuanyao Fong, Thomas Ostler +2
Optical interconnect has emerged as the front-runner to replace electrical interconnect especially for off-chip communication. However, a major drawback with optical interconnects…
Temperature Dependent Ferromagnetic Resonance via the Landau-Lifshitz-Bloch Equation: Application to FePt
Thomas A. Ostler, Matthew O. A. Ellis, Denise Hinzke +1
Using the Landau-Lifshitz-Bloch (LLB) equation for ferromagnetic materials, we derive analytic expressions for temperature dependent absorption spectra as probed by ferromagnetic r…
Atomistic spin model simulations of magnetic nanomaterials
Richard F. L. Evans, Weijia J. Fan, Phanwadee Chureemart +3
Atomistic modelling of magnetic materials provides unprecedented detail about the underlying physical processes that govern their macroscopic properties, and allows the simulation…
Ultrafast thermally induced magnetic switching in synthetic ferrimagnets
Richard F. L. Evans, Thomas A. Ostler, Roy W. Chantrell +2
Synthetic ferrimagnets are composite magnetic structures formed from two or more anti- ferromagnetically coupled magnetic sublattices with different magnetic moments. Here we repor…
Ultrafast dynamical path for the switching of a ferrimagnet after femtosecond heating
U. Atxitia, T. Ostler, J. Barker +3
Ultrafast laser-induced magnetic switching in rare earth, transition metal ferrimagnetic alloys has recently been reported to occur by ultrafast heating alone. Using atomistic simu…