NIMTE OpenIR  > 2018专题
First-principles investigation of magnetocrystalline anisotropy oscillations in Co2FeAl/Ta heterostructures
Qiao, Junfeng; Peng, Shouzhong; Zhang, Youguang; Yang, Hongxin; Zhao, Weisheng
2018
发表期刊PHYSICAL REVIEW B
卷号97期号:5
摘要We report first-principles investigations of magnetocrystalline anisotropy energy (MCAE) oscillations as a function of capping layer thickness in Heusler alloy Co2FeAl/Ta heterostructures. A substantial oscillation is observed in the FeAl-interface structure. According to k-space and band-decomposed charge-density analyses, this oscillation is mainly attributed to the Fermi-energy-vicinal quantum well states (QWSs) which are confined between the Co2FeAl/Ta interface and Ta/vacuum surface. The smaller oscillation magnitude in the Co-interface structure can be explained by the smooth potential transition at the interface. These findings clarify that MCAE in Co2FeAl/Ta is not a local property of the interface and that the quantum well effect plays a dominant role in MCAE oscillations of the heterostructures. This work presents the possibility of tuning MCAE by QWSs in capping layers and paves the way for artificially controlling magnetic anisotropy energy in magnetic tunnel junctions.
关键词Magnetic-anisotropy Trilayers Energy
学科领域Materials Science ; Physics
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16804
专题2018专题
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GB/T 7714
Qiao, Junfeng,Peng, Shouzhong,Zhang, Youguang,et al. First-principles investigation of magnetocrystalline anisotropy oscillations in Co2FeAl/Ta heterostructures[J]. PHYSICAL REVIEW B,2018,97(5).
APA Qiao, Junfeng,Peng, Shouzhong,Zhang, Youguang,Yang, Hongxin,&Zhao, Weisheng.(2018).First-principles investigation of magnetocrystalline anisotropy oscillations in Co2FeAl/Ta heterostructures.PHYSICAL REVIEW B,97(5).
MLA Qiao, Junfeng,et al."First-principles investigation of magnetocrystalline anisotropy oscillations in Co2FeAl/Ta heterostructures".PHYSICAL REVIEW B 97.5(2018).
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