Type
ArticleAuthors
Jué, Emilie
Safeer, C. K.
Drouard, Marc
Lopez, Alexandre
Balint, Paul
Buda-Prejbeanu, Liliana
Boulle, Olivier
Auffret, Stephane
Schuhl, Alain
Manchon, Aurelien

Miron, Ioan Mihai
Gaudin, Gilles
KAUST Department
Material Science and Engineering ProgramPhysical Science and Engineering (PSE) Division
Spintronics Theory Group
Date
2015-12-21Online Publication Date
2015-12-21Print Publication Date
2016-03Permanent link to this record
http://hdl.handle.net/10754/596855
Metadata
Show full item recordAbstract
Structural symmetry breaking in magnetic materials is responsible for the existence of multiferroics1, current-induced spin–orbit torques2, 3, 4, 5, 6, 7 and some topological magnetic structures8, 9, 10, 11, 12. In this Letter we report that the structural inversion asymmetry (SIA) gives rise to a chiral damping mechanism, which is evidenced by measuring the field-driven domain-wall (DW) motion in perpendicularly magnetized asymmetric Pt/Co/Pt trilayers. The DW dynamics associated with the chiral damping and those with Dzyaloshinskii–Moriya interaction (DMI) exhibit identical spatial symmetry13, 14, 15, 16, 17, 18, 19. However, both scenarios are differentiated by their time reversal properties: whereas DMI is a conservative effect that can be modelled by an effective field, the chiral damping is purely dissipative and has no influence on the equilibrium magnetic texture. When the DW motion is modulated by an in-plane magnetic field, it reveals the structure of the internal fields experienced by the DWs, allowing one to distinguish the physical mechanism. The chiral damping enriches the spectrum of physical phenomena engendered by the SIA, and is essential for conceiving DW and skyrmion devices owing to its coexistence with DMI (ref. 20).Citation
Chiral damping of magnetic domain walls 2015 Nature MaterialsPublisher
Springer NatureJournal
Nature MaterialsDOI
10.1038/nmat4518PubMed ID
26689141arXiv
1504.04411Additional Links
http://www.nature.com/doifinder/10.1038/nmat4518ae974a485f413a2113503eed53cd6c53
10.1038/nmat4518
Scopus Count
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