UM
Effects of external magnetic field and magnetic anisotropy on chiral spin structures of square nanodisks investigated with a quantum simulation approach
Liu Z.1; Ian H.2
2016-04-01
Source PublicationSuperlattices and Microstructures
ISSN10963677 07496036
Volume92Pages:174-180
AbstractWe employed a quantum simulation approach to investigate the magnetic properties of monolayer square nanodisks with Dzyaloshinsky-Moriya (DM) interaction. The computational program converged very quickly, and generated chiral spin structures on the disk planes with good symmetry. When the DM interaction is sufficiently strong, multi-domain structures appears, their sizes or average distance between each pair of domains can be approximately described by a modified grid theory. We further found that the external magnetic field and uniaxial magnetic anisotropy both normal to the disk plane lead to reductions of the total free energy and total energy of the nanosystems, thus are able to stabilize and/or induce the vortical structures, however, the chirality of the vortex is still determined by the sign of the DM interaction parameter. Moreover, the geometric shape of the nanodisk affects the spin configuration on the disk plane as well.
KeywordComputational algorithm Dzyaloshinsky-Moriya interaction Magnetic vortex Quantum theory
DOI10.1016/j.spmi.2016.02.028
URLView the original
Language英語
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Nanjing University of Information Science and Technology
2.Universidade de Macau
Recommended Citation
GB/T 7714
Liu Z.,Ian H.. Effects of external magnetic field and magnetic anisotropy on chiral spin structures of square nanodisks investigated with a quantum simulation approach[J]. Superlattices and Microstructures,2016,92:174-180.
APA Liu Z.,&Ian H..(2016).Effects of external magnetic field and magnetic anisotropy on chiral spin structures of square nanodisks investigated with a quantum simulation approach.Superlattices and Microstructures,92,174-180.
MLA Liu Z.,et al."Effects of external magnetic field and magnetic anisotropy on chiral spin structures of square nanodisks investigated with a quantum simulation approach".Superlattices and Microstructures 92(2016):174-180.
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