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Towards wafer scale fabrication of graphene based spin valve devices

By Ahmet Avsar, Tsung-Yeh Yang, Su-Kang Bae, Jayakumar Balakrishnan, Frank Volmer, Manu Jaiswal, Zheng Yi, Syed Rizwan Ali, Gernot Güntherodt, Byung-Hee Hong, Bernd Beschoten and Barbaros Özyilmaz

Abstract

We demonstrate injection, transport and detection of spins in spin valve arrays patterned in both copper based chemical vapor deposition (Cu-CVD) synthesized wafer scale single layer (SLG) and bilayer graphene (BLG). We observe spin relaxation times comparable to those reported for exfoliated graphene samples demonstrating that CVD specific structural differences such as nano-ripples and grain boundaries do not limit spin transport in the present samples. Our observations make Cu-CVD graphene a promising material of choice for large scale spintronic applications.Comment: 23 pages, 7 figure

Topics: Condensed Matter - Mesoscale and Nanoscale Physics
Year: 2011
DOI identifier: 10.1021/nl200714q
OAI identifier: oai:arXiv.org:1104.4715
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