Oservation of Skyrmions at Room Temperature in Co2FeAl Heusler Alloy Ultrathin Film Heterostructures

Title
Oservation of Skyrmions at Room Temperature in Co2FeAl Heusler Alloy Ultrathin Film Heterostructures
Authors
채근화Sajid HusainNaveen SisodiaAvinash Kumar ChaurasiyaAnkit KumarJitendra P al SinghBrajesh S . YadavSerkan AkanselAnjan BarmanP. K. MuduliPeter SvedlindhSujeet Chaudhary
Keywords
Magnetic skyrmions; spintronic devices; thin film heterostructures; Heusler alloy
Issue Date
2019-01
Publisher
Scientific Reports
Citation
VOL 9-1085-12
Abstract
Magnetic skyrmions are topological spin-textures having immense potential for energy efficient spintronic devices. Here, we report the observation of stable skyrmions in unpatterned Ta/Co2FeAl(CFA)/MgO thin film heterostructures at room temperature in remnant state employing magnetic force microscopy. It is shown that these skyrmions consisting of ultrathin ferromagnetic CFA Heusler alloy result from strong interfacial Dzyaloshinskii-Moriya interaction (i-DMI) as evidenced by Brillouin light scattering measurements, in agreement with the results of micromagnetic simulations. We also emphasize on room temperature observation of multiple skyrmions which can be stabilized for suitable combinations of CFA layer thickness, perpendicular magnetic anisotropy, and i-DMI. These results provide a significant step towards designing of room temperature spintronic devices based on skyrmions in full Heusler alloy based thin films.
URI
http://pubs.kist.re.kr/handle/201004/70861
ISSN
2045-2322
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE