Origination of electron magnetic chiral dichroism in cobalt-doped ZnO dilute magnetic semiconductors

Origination of electron magnetic chiral dichroism in cobalt-doped ZnO dilute magnetic semiconductors
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钴掺杂 ZnO 稀磁半导体中电子磁手性二色性的起源

DOI:
10.1016/j.scriptamat.2011.05.013
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发表时间:
2011-08
期刊:
影响因子:
6
通讯作者:
Quan Li,
Quan Li,
中科院分区:
材料科学1区
文献类型:
--
作者:
Z. H. Zhang,;H. L. Tao,;Ming He,;Quan Li,

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Electron magnetic chiral dichroism (EMCD) relates the microstructure of a single nanostructure with the magnetic property, indicating that the ferromagnetism observed in cobalt-doped ZnO dilute magnetic semiconductor is intrinsic. First-principles calculations were carried out and the electronic states contributing to the spin imbalance are identified. An exact model is developed, allowing one to visualize the origination of dichroism to be the difference of transition intensity from spin-polarized 2pstates to Co-3dstates in cobalt-doped ZnO nanostructures.
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