Effects of biaxial strains on the magnetic properties of Co-graphene heterojunctions

Sangho Lee; Heechae Choi; Yong Chae Chung

doi:10.1063/1.4729263

Effects of biaxial strains on the magnetic properties of Co-graphene heterojunctions

Sangho Lee^*, Heechae Choi, Yong Chae Chung

^*Corresponding author for this work

Hanyang University

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Using the ab initio calculations, the changes of the magnetic properties of Co atoms on graphene for biaxial strains on graphene were investigated. Our calculation results showed that the compression of graphene changed the magnetic moments of Co adatoms more significantly than the elongation of graphene. From the 3d-electron density of states of Co atoms, the changes of magnetic properties of Co atoms on graphene were found to result from the significant hybridization between Co 3d _yz and C 2p _z orbitals. It was demonstrated that this 3d-electron hybridization of Co/graphene system originated from the strain-induced change of the local atomic structure.

Original language	English
Article number	113922
Journal	Journal of Applied Physics
Volume	111
Issue number	11
DOIs	https://doi.org/10.1063/1.4729263
Publication status	Published - 1 Jun 2012
Externally published	Yes

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title = "Effects of biaxial strains on the magnetic properties of Co-graphene heterojunctions",

abstract = "Using the ab initio calculations, the changes of the magnetic properties of Co atoms on graphene for biaxial strains on graphene were investigated. Our calculation results showed that the compression of graphene changed the magnetic moments of Co adatoms more significantly than the elongation of graphene. From the 3d-electron density of states of Co atoms, the changes of magnetic properties of Co atoms on graphene were found to result from the significant hybridization between Co 3d yz and C 2p z orbitals. It was demonstrated that this 3d-electron hybridization of Co/graphene system originated from the strain-induced change of the local atomic structure.",

author = "Sangho Lee and Heechae Choi and Chung, {Yong Chae}",

note = "Funding Information: This work was supported by the National Research Foundation (NRF) grant funded by the Korea government (MEST) (No. 2011-0016945) and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2011-0026175).",

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T1 - Effects of biaxial strains on the magnetic properties of Co-graphene heterojunctions

AU - Lee, Sangho

AU - Choi, Heechae

AU - Chung, Yong Chae

N1 - Funding Information: This work was supported by the National Research Foundation (NRF) grant funded by the Korea government (MEST) (No. 2011-0016945) and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2011-0026175).

PY - 2012/6/1

Y1 - 2012/6/1

N2 - Using the ab initio calculations, the changes of the magnetic properties of Co atoms on graphene for biaxial strains on graphene were investigated. Our calculation results showed that the compression of graphene changed the magnetic moments of Co adatoms more significantly than the elongation of graphene. From the 3d-electron density of states of Co atoms, the changes of magnetic properties of Co atoms on graphene were found to result from the significant hybridization between Co 3d yz and C 2p z orbitals. It was demonstrated that this 3d-electron hybridization of Co/graphene system originated from the strain-induced change of the local atomic structure.

AB - Using the ab initio calculations, the changes of the magnetic properties of Co atoms on graphene for biaxial strains on graphene were investigated. Our calculation results showed that the compression of graphene changed the magnetic moments of Co adatoms more significantly than the elongation of graphene. From the 3d-electron density of states of Co atoms, the changes of magnetic properties of Co atoms on graphene were found to result from the significant hybridization between Co 3d yz and C 2p z orbitals. It was demonstrated that this 3d-electron hybridization of Co/graphene system originated from the strain-induced change of the local atomic structure.

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DO - 10.1063/1.4729263

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Effects of biaxial strains on the magnetic properties of Co-graphene heterojunctions

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