dorsal/arxiv
View SchemaLarge Magnetic Moments of Arsenic-Doped Mn Clusters and their Relevance to Mn-Doped III-V Semiconductor Ferromagnetism
| Authors | Mukul Kabir, D. G. Kanhere, Abhijit Mookerjee |
|---|---|
| Categories | |
| ArXiv ID | physics/0503009 |
| URL | https://arxiv.org/abs/physics/0503009 |
| DOI | 10.1103/PhysRevB.73.075210 |
| Journal | Physical Review B 73, 075210 (2006) |
Abstract
We report electronic and magnetic structure of arsenic-doped manganese clusters from density-functional theory using generalized gradient approximation for the exchange-correlation energy. We find that arsenic stabilizes manganese clusters, though the ferromagnetic coupling between Mn atoms are found only in Mn$_2$As and Mn$_4$As clusters with magnetic moments 9 $\mu_B$ and 17 $\mu_B$, respectively. For all other sizes, $x=$ 3, 5-10, Mn$_x$As clusters show ferrimagnetic coupling. It is suggested that, if grown during the low temperature MBE, the giant magnetic moments due to ferromagnetic coupling in Mn$_2$As and Mn$_4$As clusters could play a role on the ferromagnetism and on the variation observed in the Curie temperature of Mn-doped III-V semiconductors.
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"abstract": "We report electronic and magnetic structure of arsenic-doped manganese\nclusters from density-functional theory using generalized gradient\napproximation for the exchange-correlation energy. We find that arsenic\nstabilizes manganese clusters, though the ferromagnetic coupling between Mn\natoms are found only in Mn$_2$As and Mn$_4$As clusters with magnetic moments 9\n$\\mu_B$ and 17 $\\mu_B$, respectively. For all other sizes, $x=$ 3, 5-10,\nMn$_x$As clusters show ferrimagnetic coupling. It is suggested that, if grown\nduring the low temperature MBE, the giant magnetic moments due to ferromagnetic\ncoupling in Mn$_2$As and Mn$_4$As clusters could play a role on the\nferromagnetism and on the variation observed in the Curie temperature of\nMn-doped III-V semiconductors.",
"arxiv_id": "physics/0503009",
"authors": [
"Mukul Kabir",
"D. G. Kanhere",
"Abhijit Mookerjee"
],
"categories": [
"physics.atm-clus"
],
"doi": "10.1103/PhysRevB.73.075210",
"journal_ref": "Physical Review B 73, 075210 (2006)",
"title": "Large Magnetic Moments of Arsenic-Doped Mn Clusters and their Relevance to Mn-Doped III-V Semiconductor Ferromagnetism",
"url": "https://arxiv.org/abs/physics/0503009"
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