自旋衰减需要时间

美国工程师们发现,在有机纳米导线构成的"自旋阀"中,电子自旋极其稳健。弗吉尼亚联邦大学和西西纳提大学的研究团队发现,这些导线中的电子自旋耗散时间起码比其它任何一个系统中的电子自旋耗散时间长1000倍。该结果意味着这些材料可能是用于自旋电子学――一种在电子线路、计算机或者其他装置里利用电子自旋来对信息进行编码的新兴研究领域――的理想选择。

Spins take their time to relax (Mar 22)

http://physicsweb.org/article/news/11/3/16

Engineers in the US have discovered that the spin of electrons in organic nanowire "spin valves" is extremely robust. A team of researchers from Virginia Commonwealth University and the University of Cincinnati have found that the "spin-relaxation time" in these wires is at least 1000 times longer than that reported in any other system. The
result means that these materials could be ideal for use in spintronics, an emerging field that exploits the spin of the electron to encode information in electronic circuits, computers and other devices (Nature Nanotechnology doi:10.1038/nnano.2007.64).