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  Critical sample aspect ratio and magnetic field dependence for antiskyrmion formation in Mn1.4PtSn single crystals

Zuniga Cespedes, B. E., Vir, P., Milde, P., Felser, C., & Eng, L. (2021). Critical sample aspect ratio and magnetic field dependence for antiskyrmion formation in Mn1.4PtSn single crystals. Physical Review B, 103(18): 184411, pp. 1-7. doi:10.1103/PhysRevB.103.184411.

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 Creators:
Zuniga Cespedes, B. E.1, Author              
Vir, P.1, Author              
Milde, P.2, Author
Felser, C.3, Author              
Eng, L.M.2, Author
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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Free keywords: Band structure, Ferromagnetic materials, Ferromagnetism, Fractals, Magnetic fields, Manganese alloys, Nanocrystalline materials, Platinum alloys, Ternary alloys, Textures, Tin alloys, Critical aspect ratio, Critical thickness, External magnetic field, Ferromagnetic domains, Magnetic field dependences, Magnetic textures, Single-crystalline, Spin reorientation transitions, Aspect ratio
 Abstract: Mn1.4PtSn is the first material in which antiskyrmions have been observed in ultrathin single-crystalline specimens. While bulk crystals exhibit fractal patterns of purely ferromagnetic domain ordering at room temperature, ultrathin Mn1.4PtSn lamellae clearly show antiskyrmion lattices with lattice spacings up to several μm. In the paper presented here, we systematically investigate the thickness region from 400 nm to 10 μm using 100×100μm2 wide Mn1.4PtSn plates, and identify the critical thickness-to-width aspect ratio α0=0.044 for the ferromagnetic fractal domain to the noncollinear texture phase transition. Additionally, we also explore these noncollinear magnetic textures below the critical aspect ratio α0 above and below the spin-reorientation transition temperature TSR while applying variable external magnetic fields. What we find is a strong hysteresis for the occurrence of an antiskyrmion lattice, since the antiskyrmions preferentially nucleate by pinching them off from helical stripes in the transition to the field polarized state. © 2021 authors. Published by the American Physical Society.

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Language(s): eng - English
 Dates: 2021-05-122021-05-12
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevB.103.184411
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 103 (18) Sequence Number: 184411 Start / End Page: 1 - 7 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008