Abstract:

One of the important branches of nanotechnology research is the nano-scale electronics. Nanoelectronic devices operate by the principle of quantum mechanics, their properties are closely related to their atomic structure. It has been a theoretical challenge to calculate device characteristics including relevant microscopic details, especially when one wishes to predict these characteristics without using any phenomenological parameter.
In this talk, I will speak about the present status of nanoelectronic device theory, the existing theoretical difficulties, and some important problems. I will then report an useful progress we have achieved toward quantitative predictions of non-equilibrium and non-linear charge/spin quantum transport in nanoelectronic devices from atomic point of view. I will give several examples of calculating spin polarized quantum transport in magnetic nanostructures including a very new topic of graphene spintronics. I will end the talk by outlining some existing challenges for developing tools powerful enough for nanoelectronics design automation.
 
 
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