典型文献
Magnetic Interactions and Band Gaps of the(CrO2)2/(MgH2)n Superlattices
文献摘要：
Lattice superlattices constructed with different materials such as ferromagnets and insulators at atomic scale provide an ideal platform for exploring many emergent physical phenomena.In the present work,a new type of superlattices composed of ferromagnetic half-metal Cr02,with a thickness of two atomic layers,together with insulating MgH2 are constructed.Systematic theoretical studies on the(CrO2)2/(MgH2)n(n=2,3,4,5,6)superlattices are carried out based on first-principles density-functional theory calculations.These superlattices are ferromagnetic semiconductors with similar intra-layer magnetic exchange couplings between Cr ions.As the thickness of the MgH2 layer increases,the magnetic exchange interaction between inter-layer Cr ions shows oscillating decaying behavior,while the energy band gaps show a small increase.The understanding of magnetic couplings in these superlattices provides a pathway for constructing new ferromagnetic semiconductors.
文献关键词：
中图分类号：
作者姓名：
Wanfei Shan;Jiangtao Du;Weidong Luo
作者机构：
Key Laboratory of Artificial Structures and Quantum Control(Ministry of Education),School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of Natural Sciences,Shanghai Jiao Tong University,Shanghai 200240,China
文献出处：
引用格式：
[1]Wanfei Shan;Jiangtao Du;Weidong Luo-.Magnetic Interactions and Band Gaps of the(CrO2)2/(MgH2)n Superlattices)[J].中国物理快报（英文版）,2022(11):76-90
A类：
Superlattices,Cr02
B类：
Magnetic,Interactions,Band,Gaps,CrO2,MgH2,Lattice,superlattices,constructed,different,materials,such,ferromagnets,insulators,atomic,scale,ideal,platform,exploring,many,emergent,physical,phenomena,present,work,new,type,composed,ferromagnetic,half,metal,thickness,two,layers,together,insulating,are,Systematic,theoretical,studies,carried,out,first,principles,density,functional,theory,calculations,These,semiconductors,similar,intra,exchange,couplings,between,increases,interaction,shows,oscillating,decaying,behavior,while,energy,band,gaps,small,understanding,these,provides,pathway,constructing
AB值：
0.563106
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