Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 383, Issue -, Pages 100-103Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2014.10.099
Keywords
Semiconductor nanoclusters; Metal phthalocyanines; Spintronics; Stoner criterion
Funding
- Russian Fund for Basic Research [13-02-00580a, 13-02-00655a, 14-02-00583a]
- RAS
- Government of the Russian Federation [14.A12.31.0003]
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The Stoner criterion is known as a useful tool predicting the ferromagnetic state (FM) in metals. This criterion is not applied to nanoobjects, because of their discrete electron spectrum. In our paper we consider a generalization of this criterion, which can be applied to magnetism in semiconductor nanoobjects. To derive it, we compare total energies of the FM and non-magnetic states using many-body perturbation theory. The derived criterion has compact form and may be useful for prediction of ferromagnetism in nanoobjects. To check its precision, we performed first-principle calculations of several semiconductor nanoobjects in the FM and non-magnetic states and compared their results with predicted ones. (C) 2014 Elsevier B.V. All rights reserved
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