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Interplay of Dzyaloshinsky-Moriya and dipole-dipole interactions and their joint effects upon vortical structures on nanodisks
Liu, Zhaosen; Ciftja, Orion; Ian, Hou
2017-06
Source PublicationPHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
ISSN1386-9477
Volume90Pages:13-20
AbstractIn transition metal oxides, magnetic dipole-dipole (DD) and chiral Dzyaloshinsky-Moriya (DM) interactions between nearest neighboring spins are comparable in magnitude. In particular, the effects of the DD interaction on the physical properties of magnetic nanosystems cannot be simply neglected due to its long-range character. For these reasons, we employed here a new quantum simulation approach in order to investigate the interplay of these two interactions and study their combined effects upon the magnetic vortical structures of monolayer nanodisks. Consequently, we found out from our computational results that, in the presence of Heisenberg exchange interaction, a sufficiently strong DD interaction is also able to induce a single magnetic vortex on a small nanodisk; a strong DM interaction usually gives rise to a multi-domain structure which evolves with changing temperature; In this circumstance, if a weak DD interaction is further considered, the multi-domains merge to form a single vortex in the whole magnetic phase. Moreover, if only the Heisenberg exchange and chiral DM interactions are considered in simulations, our results from calculations with different spin values show that the transition temperature T-M is simply proportional to S(S + 1); if the temperature is scaled with TM, and the calculated magnetizations are divided by the spin value S, their curves exhibit very similar features in the whole temperature region below T-M
KeywordDzyaloshinsky-Moriya interaction Dipole-dipole interaction Magnetic vortices Quantum simulation model
DOI10.1016/j.physe.2017.03.002
URLView the original
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics ; Physics
WOS SubjectNanoscience & Nanotechnology ; Physics, Condensed Matter
WOS IDWOS:000401386400003
PublisherELSEVIER SCIENCE BV
The Source to ArticleWOS
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被引频次[WOS]:5   [WOS记录]     [WOS相关记录]
Document TypeJournal article
专题University of Macau
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Liu, Zhaosen,Ciftja, Orion,Ian, Hou. Interplay of Dzyaloshinsky-Moriya and dipole-dipole interactions and their joint effects upon vortical structures on nanodisks[J]. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,2017,90:13-20.
APA Liu, Zhaosen,Ciftja, Orion,&Ian, Hou.(2017).Interplay of Dzyaloshinsky-Moriya and dipole-dipole interactions and their joint effects upon vortical structures on nanodisks.PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,90,13-20.
MLA Liu, Zhaosen,et al."Interplay of Dzyaloshinsky-Moriya and dipole-dipole interactions and their joint effects upon vortical structures on nanodisks".PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 90(2017):13-20.
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