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UC Riverside physicists pave the way for graphene-based spin computer
Date:10/14/2010

eans the true spin lifetime in graphene must be longer than reported previously potentially a lot longer."

Kawakami explained that, theoretically, graphene has the potential for extremely long spin lifetimes.

"This lifetime could be microseconds long," he said. "A long lifetime is a special property of graphene, making it a very attractive material for a spin computer."

Growing insulating barriers on graphene is neither a simple nor easy process. The insulator tends to form clumps on the graphene sheet, due in part to graphene's reluctance to form strong bonds with materials. To circumvent the problem of clumping, in their experiments the Kawakami team layered the graphene sheet with titanium (about half an atom thick) using a method called molecular beam epitaxy. The titanium layer, the researchers found, prevented the insulator from clumping on graphene or sliding off it.

Next in the research, the Kawakami lab plans to demonstrate a working spin logic device


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Contact: Iqbal Pittalwala
iqbal@ucr.edu
951-827-6050
University of California -- Riverside
Source:Eurekalert  

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