Ab initio calculations at the Hartree-Fock and second-order perturbation (MP2) levels were performed on diamond-like clusters with a single nitrogen substitutional impurity. The largest cluster consists of 71 atoms and 387 basis functions, and the MP2 calculations correlated ail I77 valence electron
Ab initio investigation of magnetism in Cr-doped diamond-like carbon
✍ Scribed by Matej Komelj
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 174 KB
- Volume
- 248
- Category
- Article
- ISSN
- 0370-1972
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✦ Synopsis
Abstract
We constructed supercells for modeling diamond‐like carbon (DLC) structures and doped them with Cr atoms in order to investigate the presence of magnetism, which was recently observed experimentally. The total energies for the magnetic and non‐magnetic (NM) states were calculated ab initio within the framework of the density‐functional theory (DFT). We found that an external strain is required for the ferromagnetic state to be energetically the most favorable.
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