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000201878 0247_ $$2doi$$a10.1103/PhysRevB.89.134403
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000201878 1001_ $$0P:(DE-Juel1)130503$$aAndreas, Christian$$b0$$eCorresponding Author
000201878 245__ $$aMultiscale and multimodel simulation of Bloch-point dynamics
000201878 260__ $$aCollege Park, Md.$$bAPS$$c2014
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000201878 520__ $$aWe present simulation results on the structure and dynamics of micromagnetic point singularities with atomistic resolution. This is achieved by embedding an atomistic computational region into a standard micromagnetic algorithm. Several length scales are bridged by means of an adaptive mesh refinement and a seamless coupling between the continuum theory and a Heisenberg formulation for the atomistic region. The code operates on graphical processing units and is able to detect and track the position of strongly inhomogeneous magnetic regions. This enables us to reliably simulate the dynamics of Bloch points, which means that a fundamental class of micromagnetic switching processes can be analyzed with unprecedented accuracy. We test the code by comparing it with established results and present its functionality with the example of a simulated field-driven Bloch-point motion in a soft-magnetic cylinder.
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000201878 7001_ $$0P:(DE-Juel1)130747$$aKákay, Attila$$b1
000201878 7001_ $$0P:(DE-Juel1)130709$$aHertel, Riccardo$$b2
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000201878 773__ $$0PERI:(DE-600)2844160-6$$a10.1103/PhysRevB.89.134403$$gVol. 89, no. 13, p. 134403$$n13$$p134403$$tPhysical review / B$$v89$$x1098-0121$$y2014
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000201878 9132_ $$0G:(DE-HGF)POF3-522$$1G:(DE-HGF)POF3-520$$2G:(DE-HGF)POF3-500$$aDE-HGF$$bKey Technologies$$lFuture Information Technology - Fundamentals, Novel Concepts and Energy Efficiency (FIT)$$vControlling Spin-Based Phenomena$$x0
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000201878 9141_ $$y2015
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