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liuyanping105

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[½»Á÷] ΪʲôÀíÂÛÔ¤²âgraphene spin diffusion length ¿É´ïµ½100 um,µ«Êµ¼Ê²âÁ¿»¹²»µ½10um,

ΪʲôÀíÂÛÔ¤²âgraphene spin diffusion length ¿É´ïµ½100 um,µ«Êµ¼Ê²âÁ¿»¹²»µ½10um, ÊÒÎÂÖ»ÓÐ1-2 um ÔÚsingle layer graphene. ÁíÍ⣺Spin life time is  50-200ps, the order of magnitude shorter than expected from the intrinsic spin-orbit coupling(-us).The results indicates that the presence of the extrinsic spin relaxation mechanism.

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why graphene for spintronics?

1. Extraordinary high mobility
>200000cm2v-1s-1 (suspended , low temperature)
>40000cm2v-1s-1 (on sio2 , room temperature)
-------Future high-speed transistor materials

2.only light atoms (carbon)-----small spin-orbit interaction
                                             long spin relaxation time
high mobility ----long spin coherent length

----------------Future spintronics devices
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