Effects of In-Plane Magnetization Orientation on Magnetic and Electronic Properties in a Bcc Co (001)/Rock Salt MgO (001)/Bcc Co (001) Magnetic Tunnel Junction System: Ab Initio Calculations
- Title
- Effects of In-Plane Magnetization Orientation on Magnetic and Electronic Properties in a Bcc Co (001)/Rock Salt MgO (001)/Bcc Co (001) Magnetic Tunnel Junction System: Ab Initio Calculations
- Other Titles
- Rock Salt MgO (001)
- Author
- 정용재
- Keywords
- Magnetic Tunnel Junction; Noncollinear; Density Functional Theory
- Issue Date
- 2012-06
- Publisher
- AMER SCIENTIFIC PUBLISHERS, 26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,Vol12,No4,p3602-3605
- Abstract
- Ab initio calculations were performed on a fully epitaxial bcc Co (001)/rock salt MgO (001)/bcc Co (001) magnetic tunnel junction system for two cases where the magnetization is parallel to bcc Co [100] and to bcc Co [110]. Structural optimization reveals that the two cases are equivalent systems and that the Co electrodes contract in the z-direction whereas the MgO insulating barrier expands. The magnetic moments of each monolayer vary slightly in each case; furthermore, only the magnetic moment at the surface of the Co atom shows any enhancement (12%). The layer decomposed density of states profiles reveals that the bonding character of the junction interface is derived mainly from the 2p-3d hybridization of the MgO and Co interfacial atoms.
- URI
- https://www.ncbi.nlm.nih.gov/pubmed/22849177http://hdl.handle.net/20.500.11754/40149
- ISSN
- 1533-4880
- DOI
- 10.1166/jnn.2012.5649
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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