Study of Critical Temperature of Diluted Magnetic Semiconductors (Ga,Mn)As
| dc.contributor.author | Sahele, Asnake | |
| dc.date.accessioned | 2018-06-19T07:17:38Z | |
| dc.date.accessioned | 2023-11-09T11:27:31Z | |
| dc.date.available | 2018-06-19T07:17:38Z | |
| dc.date.available | 2023-11-09T11:27:31Z | |
| dc.date.issued | 2011-06 | |
| dc.description.abstract | (Ga;Mn)As is a very extensively studied diluted magnetic semiconductor. This type of materials bridge over the incompatibilities in metal-semiconductor in-terfaces in electron- ics components and which will have an enormous potential for future spintronics appli- cations, where both charge and spin degrees of freedom can be employed simultaneously. In this work an approach based on the green's function to the Ruderman-Kittel-Kasuya- Yosida quantum spin model is used to calculate the magnetic excitation spectrum in the widely studied (Ga1xMnx)As diluted magnetic semiconductors. The resulting magnetic excitation spectrum is then used to estimate The total number of excited magnons, mag- netization, and Curie temperature of (Ga;Mn)As diluted magnetic semiconductor. The equation of motion for the magnon Greens function within Tyablikov approximation is solved numerically for systems in which S is larger than 1/2 | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/1517 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Semiconductors (Ga,Mn)As | en_US |
| dc.title | Study of Critical Temperature of Diluted Magnetic Semiconductors (Ga,Mn)As | en_US |
| dc.type | Thesis | en_US |