A possible source of spin-polarized electrons: The inert graphene/Ni(111) system

被引:127
作者
Dedkov, Yu. S. [1 ]
Fonin, M. [2 ]
Laubschat, C. [1 ]
机构
[1] Tech Univ Dresden, Inst Festkorperphys, D-01062 Dresden, Germany
[2] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany
关键词
D O I
10.1063/1.2841809
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report on an investigation of spin-polarized secondary electron emission from the chemically inert system: graphene/Ni(111). An ordered passivation graphene layer (monolayer of graphite) was formed on Ni(111) surface via cracking of propylene gas. The spin polarization of secondary electrons obtained from this system upon photoemission is only slightly lower than the one from the clean Ni surface but does not change upon large oxygen exposure. These results suggest to use such passivated Ni(111) surface as a source of spin-polarized electrons stable against adsorption of reactive gases. (C) 2008 American Institute of Physics.
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