Noncollinear ferrimagnetism and anomalous Hall effects in Mn4N thin films
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Journal ArticleDate:
2022Access:
openAccessCitation:
Yangkun He, Simon Lenne, Zsolt Gercsi, Gwenael Atcheson, Jack O'Brien, Daniel Fruchart, Karsten Rode, J.M.D. Coey, Noncollinear ferrimagnetism and anomalous Hall effects in Mn4N thin films, Physical Review B, 106, 2022, L060409 -Download Item:
PhysRevB.106.L060409.pdf (PDF) 1.725Mb
Abstract:
Thin films of
Mn
4
N
and related ternary metallic perovskites with perpendicular anisotropy are interesting for spintronics, but their magnetic structures differ from the triangular ferrimagnetism of the bulk. A temperature-independent anomalous Hall conductivity of
−
90
Ω
–
1
c
m
–
1
was found in
Mn
4
N
films, in addition to the normal temperature-dependent contribution. Based on known spin structures of bulk
Mn
3
Z
N
compounds and the distance dependence of the Mn-Mn exchange for first- and second-neighbor Mn-Mn pairs, we propose a topological noncollinear spin structure for the
Mn
4
N
films with perpendicular anisotropy. The Letter shows how a small change in symmetry of the spin structure can influence the magnetotransport properties of frustrated ferrimagnetic films.
Sponsor
Grant Number
Science Foundation Ireland (SFI)
ZEMS (Grant No. 16/IA/4534)
Science Foundation Ireland (SFI)
MANIAC (Grant No. 17/NSFC/5294)
Author's Homepage:
http://people.tcd.ie/venkatemhttp://people.tcd.ie/jcoey
Description:
PUBLISHED
Author: Venkatesan, Munuswamy; Coey, John
Sponsor:
Science Foundation Ireland (SFI)Science Foundation Ireland (SFI)
Type of material:
Journal ArticleCollections:
Series/Report no:
Physical Review B;106;
Availability:
Full text availableSubject (TCD):
Nanoscience & Materials , Applied physics , Condensed matter, electronic, magnetic and superconductive properties , Magnetism and spin electronics , Nanotechnology , PhysicsDOI:
https://doi.org/10.1103/PhysRevB.106.L060409Source URI:
https://journals.aps.org/prb/pdf/10.1103/PhysRevB.106.L060409ISSN:
2469-9969The following license files are associated with this item: