NDLI: Strain Effect on the Ultrafast Spin Switching of Cobalt-Doped Carbon Fullerenes

Content Provider	IEEE Xplore Digital Library
Author	Li, C. Liu, J. Zhang, S. Lefkidis, G. Hubner, W.
Copyright Year	1965
Abstract	Endohedral fullerenes can realize robust and chemically protected spin systems, and are the promising candidates for molecular spintronics owing to their long magnetic relaxation times. In this paper, we take one- and two-magnetic-center Co-doped carbon fullerenes, specifically [Co₂@C₆₀]⁺ and Co₂@C₆₀, as examples to study their ultrafast, laser-induced, spin dynamics through ab initio calculations. In particular, the strain modulation on the spin-switching process is investigated in detail. It is shown that the local spin switching on the Co atom of the molecular ion [Co₂@C₆₀]⁺ and the simultaneous spin switching on both the Co atoms of the neutral system Co₂@C₆₀ can be accomplished via Λ processes on the subpicosecond time scale. It is interesting that the spin-switching process on the endohedral fullerene Co₂@C₆₀ can be speeded up when the system is subjected to an increasing tensile strain. It is demonstrated that the achieved various spin-switching scenarios result from the combination of the applied strain and the configuration of the system. The present results reveal the great potential of using magnetic endohedral fullerenes for active spin control and hence functionalization in the future spintronic devices.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	5
Page Count	5
File Size	1184738
File Format	PDF
ISSN	00189464
Volume Number	51
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switches Carbon Magnetic switching Atomic beams Tensile strain Metals ultrafast spin switching Strain effect endohedral fullerene Ab initio calculation strain effect
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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