Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8160301 | Physica B: Condensed Matter | 2018 | 4 Pages |
Abstract
With density functional calculations, the enhancement of magnetic exchange energy (MEE) of two-dimensional (2-d) diluted magnetic semiconductor (DMS) δ-(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 δ-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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
X.Y. Li, Y. Zhu, Y.F. Pan, J.B. Li, C.S. Wang, D.N. Shi, X.Y. Wei, K.C. Zhang, C.L. Ma,