Giant spin Hall effect in graphene grown by chemical vapour deposition

Jayakumar Balakrishnan, Gavin Kok Wai Koon, Ahmet Avsar, Yuda Ho, Jong Hak Lee, Manu Jaiswal, Seung-Jae Baeck, Jong-Hyun Ahn, Aires Ferreira, Miguel A. Cazalilla, Antonio H. Castro Neto and Barbaros Özyilmaz ()
Additional contact information
Jayakumar Balakrishnan: National University of Singapore, 2 Science Drive 3
Gavin Kok Wai Koon: National University of Singapore, 2 Science Drive 3
Ahmet Avsar: National University of Singapore, 2 Science Drive 3
Yuda Ho: National University of Singapore, 2 Science Drive 3
Jong Hak Lee: National University of Singapore, 2 Science Drive 3
Manu Jaiswal: National University of Singapore, 2 Science Drive 3
Seung-Jae Baeck: School of Electrical and Electronic Engineering, Yonsei University
Jong-Hyun Ahn: School of Electrical and Electronic Engineering, Yonsei University
Aires Ferreira: National University of Singapore, 2 Science Drive 3
Miguel A. Cazalilla: Graphene Research Centre, National University of Singapore, 6 Science Drive 2
Antonio H. Castro Neto: National University of Singapore, 2 Science Drive 3
Barbaros Özyilmaz: National University of Singapore, 2 Science Drive 3

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract Advances in large-area graphene synthesis via chemical vapour deposition on metals like copper were instrumental in the demonstration of graphene-based novel, wafer-scale electronic circuits and proof-of-concept applications such as flexible touch panels. Here, we show that graphene grown by chemical vapour deposition on copper is equally promising for spintronics applications. In contrast to natural graphene, our experiments demonstrate that chemically synthesized graphene has a strong spin–orbit coupling as high as 20 meV giving rise to a giant spin Hall effect. The exceptionally large spin Hall angle ~0.2 provides an important step towards graphene-based spintronics devices within existing complementary metal-oxide-semiconductor technology. Our microscopic model shows that unavoidable residual copper adatom clusters act as local spin–orbit scatterers and, in the resonant scattering limit, induce transverse spin currents with enhanced skew-scattering contribution. Our findings are confirmed independently by introducing metallic adatoms-copper, silver and gold on exfoliated graphene samples.

Date: 2014
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms5748 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5748

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms5748

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().