Modeling of schottky and ohmic contacts between metal and graphene nanoribbons using extended h&amp;#x00FC;ckel theory (EHT)-based NEGF method

Ximeng Guan,Ming Zhang,Qiushi Ran,H.-S Philip Wong,Zhiping Yu

doi:10.1109/iedm.2008.4796650

Modeling of schottky and ohmic contacts between metal and graphene nanoribbons using extended h&#x00FC;ckel theory (EHT)-based NEGF method

Ximeng Guan, Ming Zhang + Show 3 more

https://doi.org/10.1109/iedm.2008.4796650

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Publication Date: Dec 1, 2008

Citations: 16

Affiliation: Tsinghua University, Stanford University

#Ohmic Contacts #Extended Huckel Theory + Show 8 more

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Abstract

The extended huckel theory (EHT)-based NEGF method is applied to perform atomistic quantum transport simulation of Schottky and ohmic metal-GNR contacts with different metal electrodes. Effects induced by changing the GNR orientation or the number of graphene layers are discussed. The interface dipole due to the polarization of chemical bond is found to have a significant impact on the contact behavior.

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