Surface Pinning Effect of an Antiferromagnetic Interlayer Exchange Coupling in (Ga1-xMnxAs/GaAs: Be)(10) Multilayer
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- Title
- Surface Pinning Effect of an Antiferromagnetic Interlayer Exchange Coupling in (Ga1-xMnxAs/GaAs: Be)(10) Multilayer
- Authors
- Cho, Byeong-Gwan; Kim, Dong-Ok; Kim, Jae-Young; Chung, Jae-Ho; Lee, Sanghoon; Choi, Yongseong; Choi, Jun Woo; Lee, Dong Ryeol; Lee, Ki Bong
- Date Issued
- 2017-07
- Publisher
- KOREAN PHYSICAL SOC
- Abstract
- The depth-resolved magnetic configuration of a Ga0.97Mn0.03As/GaAs:Be multilayer with an antiferromagnetic interlayer exchange coupling was investigated using surface-sensitive soft x-ray resonant magnetic reflectivity (XRMR). We observed intriguing opposite increments in the XRMR intensities at the half-Bragg peak position between two different remanent states with opposite field sweep directions. A quantitative analysis shows that these opposite intensity increments result from two different anti-parallel spin configurations in such a way that the magnetization of top-most magnetic layer is pinned along the saturation magnetization direction before the remanent state. This surface pinning effect is important for understanding spin-dependent transport in semiconducting magnetic multilayers.
- Keywords
- X-RAY; FERROMAGNETIC SEMICONDUCTORS; FE/CR SUPERLATTICES; SCATTERING; REFLECTION; ANISOTROPY; GMR
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/50787
- DOI
- 10.3938/jkps.71.121
- ISSN
- 0374-4884
- Article Type
- Article
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 71, no. 2, page. 121 - 125, 2017-07
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