Creation of ultra low-power-consumption device operation mechanism based on graphene

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656234
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Electron device/Electronic equipment
• Research Institution: Kobe University
• Principal Investigator: SOUMA Satofumi 神戸大学, 工学(系)研究科(研究院), 准教授 (20432560)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: グラフェン / 歪み / ＦＥＴ / スピントロニクス / 量子ポンプ効果 / 光照射

Outline of Final Research Achievements

We have proposed new functional device based on graphene, where mechanical strain, light irradiation, dynamical electric field, and spin are used as key operation mechanism. The performance of these proposed device are clarified through the numerical simulations. In particular, we have numerically studied the performance of locally strained graphene based field effect transistors, where the pseudo magnetic field is induced at the interface between the strained/unstrained regions. We have predicted that the on/off ratio in such device can reach more than six orders of magnitude at the room temperature. This is in spite of the absence of the bandgap in the strained channel region. Steeper sub-threshold slope below 60 mV/decade is also predicted, suggesting the possibility to reduce power consumption in CMOS circuit significantly.

Free Research Field

物性理論