37 research outputs found
Unipolar transport in bilayer graphene controlled by multiple p-n interfaces
Unipolar transport is demonstrated in a bilayer graphene with a series of p-n
junctions and is controlled by electrostatic biasing by a comb-shaped top gate.
The OFF state is induced by multiple barriers in the p-n junctions, where the
band gap is generated by applying a perpendicular electric field to the bilayer
graphene, and the ON state is induced by the p-p or n-n configurations of the
junctions. As the number of the junction increases, current suppression in the
OFF state is pronounced. The multiple p-n junctions also realize the saturation
of the drain current under relatively high source-drain voltages.Comment: 18 pages, 4 figures, Applied Physics Letters, in printin
ソウジョウ チョウデンドウタイ ノ メン ヘイコウ キンボウ ジバ カ ニ オケル ジソク ジョウタイ
京都大学0048新制・課程博士博士(理学)甲第9075号理博第2375号新制||理||1234(附属図書館)UT51-2001-G795京都大学大学院理学研究科物理学・宇宙物理学専攻(主査)教授 石黒 武彦, 教授 大見 哲巨, 教授 山田 耕作学位規則第4条第1項該当Doctor of ScienceKyoto UniversityDA