Swartz, Adrian G. and McCreary, Kathleen M. and Han, Wei and Wong, Jared J. I. and Odenthal, Patrick M. and Wen, Hua and Chen, Jen-Ru and Kawakami, Roland K. and Hao, Yufeng and Ruoff, Rodney S. and Fabian, Jaroslav (2013) Integrating MBE materials with graphene to induce novel spin-based phenomena. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 31 (4): UNSP 04D10. ISSN 1071-1023,
Full text not available from this repository.Abstract
Magnetism in graphene is an emerging field that has received much theoretical attention. In particular, there have been exciting predictions for induced magnetism through proximity to a ferromagnetic insulator as well as through localized dopants and defects. Here, the authors discuss their experimental work using molecular beam epitaxy to modify the surface of graphene and induce novel spin-dependent phenomena. First, they investigate the epitaxial growth of the ferromagnetic insulator EuO on graphene and discuss possible scenarios for realizing exchange splitting and exchange fields by ferromagnetic insulators. Second, they investigate the properties of magnetic moments in graphene originating from localized p(z)-orbital defects (i.e., adsorbed hydrogen atoms). The behavior of these magnetic moments is studied using nonlocal spin transport to directly probe the spin-degree of freedom of the defect-induced states. They also report the presence of enhanced electron g-factors caused by the exchange fields present in the system. Importantly, the exchange field is found to be highly gate dependent, with decreasing g-factors with increasing carrier densities. (C) 2013 American Vacuum Society.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ROOM-TEMPERATURE FERROMAGNETISM; MAGNETIC SEMICONDUCTORS; POINT-DEFECTS; TRANSPORT; RELAXATION; CHALCOGENIDES; PRECESSION; FIELD; EUO; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Mar 2020 08:58 |
| Last Modified: | 06 Apr 2020 04:59 |
| URI: | https://pred.uni-regensburg.de/id/eprint/16415 |
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