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liuyanping105銀蟲 (小有名氣)
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為什么理論預(yù)測graphene spin diffusion legth 可達(dá)到100 um,但實(shí)際測量還不到10um,
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為什么理論預(yù)測graphene spin diffusion length 可達(dá)到100 um,但實(shí)際測量還不到10um, 室溫只有1-2 um 在single layer graphene. 另外: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. 請前輩指點(diǎn)。 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 |
銀蟲 (小有名氣)
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