Simulation of Graphene Nanoribbon Spin-Filter Device with Spin-Density Functional Tight-Binding Method

Author

Souma, Satofumi ; Ogawa, Matsuto ; Yamamoto, Takahiro ; Watanabe, Kazuyuki

Author_Institution

Dept. of Electr. & Electron. Eng., Kobe Univ., Kobe

fYear

2009

fDate

27-29 May 2009

Firstpage

1

Lastpage

4

Abstract

We study the spin filtering characteristics of the zigzag-edged graphene nanoribbon spin filtering device, applying the spin-density functional tight-binding method and the non- equilibrium Green´s function method. Our simulations have shown that the spin filtering effect can be controlled by applying the side-gate voltages that effectively induce the transverse electric fields. Influence of an edge lattice vacancy on the spin- filtering effect is also discussed.

Keywords

Green´s function methods; density functional theory; filters; graphene; nanoelectronics; nanostructured materials; tight-binding calculations; vacancies (crystal); C; edge lattice vacancy; graphene nanoribbon spin-filter device; nonequilibrium Green´s function method; side-gate voltages; spin-density functional tight-binding method; transverse electric fields; Computational modeling; Dielectrics and electrical insulation; Electrodes; FETs; Filtering; Green´s function methods; Nanoscale devices; Physics; Tin; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Electronics, 2009. IWCE '09. 13th International Workshop on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3925-6

Electronic_ISBN

978-1-4244-3927-0

Type

conf

DOI

10.1109/IWCE.2009.5091149

Filename

5091149