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Theoretical design of all-carbon networks with intrinsic magnetism
- Source :
- Carbon 177, 11 (2021)
- Publication Year :
- 2021
-
Abstract
- To induce intrinsic magnetism in the nominally nonmagnetic carbon materials containing only $s$ and $p$ electrons is an intriguing yet challenging task. Here, based on first-principles electronic structure calculations, we propose a universal approach inspired by Ovchinnikov's rule to guide us the design of a series of imaginative magnetic all-carbon structures. The idea is to combine the differently stacked graphene layers via the acetylenic linkages (-C$\equiv$C-) to obtain a class of two-dimensional (2D) and three-dimensional (3D) carbon networks. With first-principles electronic structure calculations, we confirm the effectiveness of this approach via concrete examples of double-layer ALBG-C14, triple-layer ALTG-C22, and bulk IALG-C30. We show that these materials are antiferromagnetic (AFM) semiconductors with intralayer N\'eel and interlayer AFM couplings. According to the above idea, our work not only provides a promising design scheme for magnetic all-carbon materials, but also can apply to other $\pi$-bonding network systems.<br />Comment: 19 pages, 5 pages, 3 tables
- Subjects :
- Condensed Matter - Materials Science
Subjects
Details
- Database :
- arXiv
- Journal :
- Carbon 177, 11 (2021)
- Publication Type :
- Report
- Accession number :
- edsarx.2106.12158
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.carbon.2021.01.153