标题：
Strong ferromagnetism of two-dimensional delta-(Zn,Cr)S with shape deformation in both PBE and LDA plus U calculations
点击次数：
所属单位：
理学院
发表刊物：
PHYSICA B-CONDENSED MATTER
关键字：
Diluted magnetic semiconductor delta-(Zn,Cr)S Enhancement of ferromagnetism Shape deformation Double exchange
摘要：
With density functional calculations, the enhancement of magnetic exchange energy (MEE) of two-dimensional (2-d) diluted magnetic semiconductor (DMS) delta-(Zn,Cr)S with shape deformation was investigated. The increase of lattice parameter c (perpendicular to the Cr layer) and decrease of a (parallel to the Cr layer) had a significant effect on the increase of MEE. Both PBE and LDA + U methods could enhance the MEE to a significant extent, which makes it superior to other delta-DMS found in initial research. The main mechanism by which increase the MEE is to vary the hole-states across the Fermi level with shape deformation, based on Zener's double exchange (DE) mechanism. This enriches the research into 2-d FM materials, which are candidates for next-generation electronic and optoelectronic applications.
ISSN号：
0921-4526
是否译文：
否
发表时间：
2018-09-15
合写作者：
李小影,潘燕飞,李晋斌,王长山,施大宁,魏心源,张开成,马春兰
通讯作者：
朱岩,潘燕飞,朱岩
发表时间：
2018-09-15
学位：理学博士学位
职称：副教授
所在单位：理学院