This title appears in the Scientific Report :
2016
Please use the identifier:
http://hdl.handle.net/2128/10339 in citations.
Please use the identifier: http://dx.doi.org/10.1088/1367-2630/18/4/045002 in citations.
New spiral state and skyrmion lattice in 3D model of chiral magnets
New spiral state and skyrmion lattice in 3D model of chiral magnets
We present the phase diagram of magnetic states for films of isotropic chiral magnets (ChMs) calculated as function of applied magnetic field and thickness of the film. We have found a novel magnetic state driven by the natural confinement of the crystal, localized at the surface and stacked on top...
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Personal Name(s): | Rybakov, Filipp N (Corresponding author) |
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Borisov, Aleksandr B / Blügel, Stefan / Kiselev, Nikolai (Corresponding author) | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 JARA - HPC; JARA-HPC JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 |
Published in: | New journal of physics, 18 (2016) 4, S. 045002 |
Imprint: |
[Bad Honnef]
Dt. Physikalische Ges.
2016
|
DOI: |
10.1088/1367-2630/18/4/045002 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena Controlling Spin-Based Phenomena |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1088/1367-2630/18/4/045002 in citations.
We present the phase diagram of magnetic states for films of isotropic chiral magnets (ChMs) calculated as function of applied magnetic field and thickness of the film. We have found a novel magnetic state driven by the natural confinement of the crystal, localized at the surface and stacked on top of the conical bulk phase. This magnetic surface state has a three-dimensional (3D) chiral spin-texture described by the superposition of helical and cycloidal spin spirals. This surface state exists for a large range of applied magnetic fields and for any film thickness beyond a critical one. We also identified the whole thickness and field range for which the skyrmion lattice becomes the ground state of the system. Below a certain critical thickness the surface state and bulk conical phase are suppressed in favor of the skyrmion lattice. Unraveling of those phases and the construction of the phase diagram became possible using advanced computational techniques for direct energy minimization applied to a basic 3D model for ChMs. Presented results provide a comprehensive theoretical description for those effects already observed in experiments on thin films of ChMs, predict new effects important for applications and open perspectives for experimental studies of such systems. |