Study of Fluctuation Effect on Electrical Conductivity and Magnetic Susceptibility of Spin Glass Superconductors
| dc.contributor.author | Abera, Solomon | |
| dc.date.accessioned | 2018-07-03T09:01:19Z | |
| dc.date.accessioned | 2023-11-09T11:24:18Z | |
| dc.date.available | 2018-07-03T09:01:19Z | |
| dc.date.available | 2023-11-09T11:24:18Z | |
| dc.date.issued | 2007-04 | |
| dc.description.abstract | The fluctuation effect on electrical conductivity and magnetic susceptibility of spinglass superconductor are studied using the macroscopic generalized Ginzburg-Landau theory. A free energy functional that consists of spin glass (g) and superconducting ( ) order parameters and their coupling is used to show the influence of spin glass magnetic ordering on superconducting cooper pairs and vice versa. It is found that during coupling of spin glass and superconductor, cooper pairs begin to break by freezing of spins in spin glass and the spins from the pair participate in the process of magnetization so that to increase the magnetic susceptibility of spin glass superconductor until spin glass and superconductor coexist. In the coexistence region the susceptibility is less than pure spin glass system. The electrical conductivity of spin glass superconductor is also affected by the rise of spin glass transition, which leads to the decrease of the superconducting order parameter and the cooper pair density. Consequently the electrical conductivity is decreased | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/5836 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Effect on Electrical Conductivity | en_US |
| dc.title | Study of Fluctuation Effect on Electrical Conductivity and Magnetic Susceptibility of Spin Glass Superconductors | en_US |
| dc.type | Thesis | en_US |