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arXiv · 1803.11336

Magnetism in amorphous carbon

Yuki Sakai·James R. Chelikowsky·Marvin L. Cohen
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Abstract

We investigate magnetism in amorphous carbon as suggested by the recently reported ferromagnetism in a new form of amorphous carbon. We use spin constrained first-principles simulations to obtain amorphous carbon structures with the desired magnetization. We show that the existence of $sp^2$-like 3-fold coordinated carbon atoms plays an important role in obtaining magnetism in amorphous carbon. The detailed geometries of 3-fold carbon atoms induce the magnetic order in amorphous carbon.

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Yuki Sakai, James R. Chelikowsky, Marvin L. Cohen. 2018-03-30. Magnetism in amorphous carbon. https://doi.org/10.1103/physrevmaterials.2.074403

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