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Band bending and quasi-2DEG in the metallized $beta$-SiC(001) surface

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 نشر من قبل Riccardo Rurali
 تاريخ النشر 2008
  مجال البحث فيزياء
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We study the mechanism leading to the metallization of the $beta$-SiC(001) Si-rich surface induced by hydrogen adsorption. We analyze the effects of band bending and demonstrate the existence of a quasi-2D electron gas, which originates from the donation of electrons from adsorbed hydrogen to bulk conduction states. We also provide a simple model that captures the main features of the results of first-principles calculations, and uncovers the basic physics of the process.



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