Carbon p electron ferromagnetism in silicon carbide

Scientific Reports
Yutian WangShengqiang Zhou

Abstract

Ferromagnetism can occur in wide-band gap semiconductors as well as in carbon-based materials when specific defects are introduced. It is thus desirable to establish a direct relation between the defects and the resulting ferromagnetism. Here, we contribute to revealing the origin of defect-induced ferromagnetism using SiC as a prototypical example. We show that the long-range ferromagnetic coupling can be attributed to the p electrons of the nearest-neighbor carbon atoms around the VSiVC divacancies. Thus, the ferromagnetism is traced down to its microscopic electronic origin.

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Citations

Nov 27, 2019·The Journal of Physical Chemistry Letters·Xue JiangJijun Zhao

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