The limit to realize an isolated magnetic single skyrmionic state

Devi, MM and Koshibae, W and Sharma, G and Tomar, R and Gaikwad, VM and Varma, RM and Nair, MN and Jha, M and Sarma, DD and Chatterjee, R and Ganguli, AK and Chakraverty, S (2019) The limit to realize an isolated magnetic single skyrmionic state. In: Journal of Materials Chemistry C, 7 (5). pp. 1337-1344.

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Abstract

The physical properties of a nanoparticle change drastically when the particle size approaches the length scale of the relevant order parameter. Herein, we demonstrate the ferrimagnetic ground state of Cu 2 OSeO 3 nanoparticles, which is otherwise a chiral magnet (including large-size skyrmionic spin texture) in its bulk form. Theoretical studies suggest that such a pure ferrimagnetic ground state in this material (with low Dzyaloshinskii-Moriya interaction to Heisenberg interaction ratio) is possible only in the presence of magneto-crystalline anisotropy energy when the confinement size approaches the skyrmion size (∼50 nm in bulk). These observations suggest the limit to realize an isolated single skyrmion.

Item Type:	Journal Article
Publication:	Journal of Materials Chemistry C
Publisher:	Royal Society of Chemistry
Additional Information:	The copyright for this article belongs to the Royal Society of Chemistry.
Keywords:	Copper compounds; Ferrimagnetism; Ground state; Nanometals; Nanoparticles; Particle size; Selenium compounds; Textures, Chiral magnets; Dzyaloshinskii-Moriya interaction; Heisenberg interaction; Length scale; Order parameter; Spin textures; Theoretical study, Nanomagnetics
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	23 Nov 2022 05:33
Last Modified:	23 Nov 2022 05:33
URI:	https://eprints.iisc.ac.in/id/eprint/78008

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