Back to Search
Start Over
Long-ranged and high temperature ferromagnetism in (Mn,C)-codoped ZnO studied by first-principles calculations.
- Source :
- Journal of Applied Physics; Feb2010, Vol. 107 Issue 3, p033903-033907, 4p, 3 Diagrams, 1 Chart, 2 Graphs
- Publication Year :
- 2010
-
Abstract
- We theoretically investigated the electronic structures and magnetic properties of (Mn,C)-codoped ZnO system based on the first-principles calculations within a GGA+U<subscript>p,d</subscript> approach. We found that codoping C is a promising approach to enhance the ferromagnetic coupling between the nearest-neighboring Mn ions due to the strong hybridization between the C:2p and the Mn:3d states. Moreover, the spin-polarized states induced by C are so extended that they can mediate long-ranged ferromagnetic exchange interactions beyond the nearest-neighboring case. Therefore, (Mn,C)-codoped ZnO is expected to be a ferromagnetic semiconductor with long-ranged ferromagnetism and high Curie temperature. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 107
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 48068140
- Full Text :
- https://doi.org/10.1063/1.3289721