Can half metallic zincblende MnAs be grown?
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2000
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| _version_ | 1866912420002267136 |
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| author | Sanvito, Stefano Hill, Nicola A. |
| author_facet | Sanvito, Stefano Hill, Nicola A. |
| contents | In this paper we investigate theoretically the ground state NiAs-type structure of MnAs and we compare the magnetic and structural properties with an hypothetical zincblende structure. A zincblende structure can be obtained, in principle, from the diluted magnetic semiconductor Ga$_{1-x}$Mn$_x$As in the limit $x=1$. Using density functional calculations within the local spin-density approximation (LSDA), we show that the zincblende structure, although showing half metallic behavior which is very attractive for spintronics, can not be stabilized at equilibrium. We perform a tight-binding analysis of the Mn-As bond in the tetrahedral coordination to investigate the nature of the bonding in diluted magnetic semiconductors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_cond_mat_0004184 |
| institution | arXiv |
| publishDate | 2000 |
| record_format | arxiv |
| spellingShingle | Can half metallic zincblende MnAs be grown? Sanvito, Stefano Hill, Nicola A. Mesoscale and Nanoscale Physics Materials Science In this paper we investigate theoretically the ground state NiAs-type structure of MnAs and we compare the magnetic and structural properties with an hypothetical zincblende structure. A zincblende structure can be obtained, in principle, from the diluted magnetic semiconductor Ga$_{1-x}$Mn$_x$As in the limit $x=1$. Using density functional calculations within the local spin-density approximation (LSDA), we show that the zincblende structure, although showing half metallic behavior which is very attractive for spintronics, can not be stabilized at equilibrium. We perform a tight-binding analysis of the Mn-As bond in the tetrahedral coordination to investigate the nature of the bonding in diluted magnetic semiconductors. |
| title | Can half metallic zincblende MnAs be grown? |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/cond-mat/0004184 |