Graphene Research Center & Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore.
Nano Lett. 2011 Jun 8;11(6):2363-8. doi: 10.1021/nl200714q. Epub 2011 May 12.
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 and bilayer graphene. We observe spin relaxation times comparable to those reported for exfoliated graphene samples demonstrating that chemical vapor deposition specific structural differences such as nanoripples 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.
我们演示了在基于铜的化学气相沉积（Cu-CVD）合成的晶圆级单层和双层石墨烯中图案化的自旋阀阵列中的注入、输运和检测自旋。我们观察到的自旋弛豫时间与剥离石墨烯样品的报道值相当，这表明化学气相沉积特有的结构差异（如纳米波纹）不会限制本样品中的自旋输运。我们的观察结果使得 Cu-CVD 石墨烯成为大规模自旋电子应用的有前途的材料选择。
