Preserving stable 100% spin polarization at (111) heterostructures of half-metallic Heusler alloy Co2VGa with semiconductor PbS

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	Preserving stable 100% spin polarization at (111) heterostructures of half-metallic Heusler alloy Co2VGa with semiconductor PbS
	H. P. Han; W. Q. Hu; G. Y. Gao; K. L. Yao
	2012
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	112 期号:8
摘要	Based on the half-metallicity confirmed experimentally in bulk Heusler alloy Co2VGa, we use the first-principles calculations to extend our previous studies on the Co2VGa (111) surfacial properties to the interfaces of Co2VGa/PbS (111) heterostructures in which four possible interfacial structures are considered between the V- and Ga-terminated (111) surfaces of Co2VGa and S- and Pb-terminated (111) surfaces of PbS. From the atomic density of states, it is shown that the half-metallicity of the bulk system is destroyed at Ga-S and Ga-Pb configurations while V-S and V-Pb configurations exhibit 100% spin polarization and nearly 100% spin polarization, respectively. Furthermore, the structure relaxation and the calculated interfacial adhesion energies indicate that V-S configuration is the most stable structure among them. In addition, we also discuss the changes of the atom magnetic moments at interface and subinterface layers with respect to the corresponding bulk values. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4759159]
部门归属	[han, hongpei; gao, g. y.; yao, k. l.] huazhong univ sci & technol, sch phys, wuhan 430074, peoples r china. [han, hongpei; gao, g. y.; yao, k. l.] huazhong univ sci & technol, wuhan natl high magnet field ctr, wuhan 430074, peoples r china. [han, hongpei; hu, wanqiang] xuchang univ, coll electroinformat engn, xuchang 461000, peoples r china. [yao, k. l.] chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;han, hp (reprint author), huazhong univ sci & technol, sch phys, wuhan 430074, peoples r china.;klyao@mail.hust.edu.cn
关键词	Magnetic-properties Growth Films Gaas
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59987
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. P. Han,W. Q. Hu,G. Y. Gao,et al. Preserving stable 100% spin polarization at (111) heterostructures of half-metallic Heusler alloy Co2VGa with semiconductor PbS[J]. Journal of Applied Physics,2012,112(8).
APA	H. P. Han,W. Q. Hu,G. Y. Gao,&K. L. Yao.(2012).Preserving stable 100% spin polarization at (111) heterostructures of half-metallic Heusler alloy Co2VGa with semiconductor PbS.Journal of Applied Physics,112(8).
MLA	H. P. Han,et al."Preserving stable 100% spin polarization at (111) heterostructures of half-metallic Heusler alloy Co2VGa with semiconductor PbS".Journal of Applied Physics 112.8(2012).