First-principles investigation of magnetocrystalline anisotropy oscillations in Co2FeAl/Ta heterostructures
文献类型：期刊论文
| 作者 | Qiao, Junfeng; Peng, Shouzhong; Zhang, Youguang; Yang, Hongxin; Zhao, Weisheng |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2018 |
| 卷号 | 97期号:5 |
| 关键词 | Magnetic-anisotropy Trilayers Energy |
| 英文摘要 | 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. |
| 学科主题 | Materials Science ; Physics |
| 语种 | 英语 |
| 公开日期 | 2018-12-04 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/16804]  |
| 专题 | 2018专题 |
| 推荐引用方式 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). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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