Chakraborty, Akash and Wenk, Paul and Bouzerar, Richard and Bouzerar, Georges (2012) Spontaneous magnetization in the presence of nanoscale inhomogeneities in diluted magnetic systems. PHYSICAL REVIEW B, 86 (21): 214402. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
The presence of nanoscale inhomogeneities has been experimentally evidenced in several diluted magnetic systems, which in turn often leads to interesting physical phenomena. However, a proper theoretical understanding of the underlying physics is lacking in most of the cases. Here, we present a detailed and comprehensive theoretical study of the effects of nanoscale inhomogeneities on the temperature-dependent spontaneous magnetization in diluted magnetic systems, which is found to exhibit an unusual and unconventional behavior. The effects of impurity clustering on the magnetization response have hardly been studied until now. We show that nanosized clusters of magnetic impurities can lead to drastic effects on the magnetization compared to that of homogeneously diluted compounds. The anomalous nature of the magnetization curves strongly depends on the relative concentration of the inhomogeneities as well as the effective range of the exchange interactions. In addition, we also provide a systematic discussion of the nature of the distributions of the local magnetizations.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FERROMAGNETIC SEMICONDUCTORS; OXIDE SEMICONDUCTORS; GA1-XMNXAS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group John Schliemann |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 30 Apr 2020 12:17 |
| Last Modified: | 30 Apr 2020 12:17 |
| URI: | https://pred.uni-regensburg.de/id/eprint/17610 |
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