GaAs-Based Single Electron Transistors and Logic Inverters Utilizing Schottky Wrap-Gate Controlled Quantum Wires and Dots
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概要
- 論文の詳細を見る
GaAs-based single electron transistors (SETs) and their logic inverters were successfully designed and fabricated using a Schottky wrap-gate (WPG) quantum wire and dot formation technology. Three-gate WPG SETs, which have two tunnel barrier gates and center gate for a quantum dot-potential control, showed voltage gains larger than unity due to tight dot-potential control of the center WPG. The conductance peak position of the SETcould be systematically controlled by changing the tunnel-barrier-control WPG voltages. A resistive-load single electron inverter utilizing 3-gate WPG SET as a driver and a WPG quantum wire transistor as an active load was fabricated and it showed a proper inverter operation at 1.6 K and realized a logic transfer gain of larger than unity (1.3) for the first time in III-V semiconductor-based SET inverters. A III-V semiconductor-based complimentary inverter utilizing two 3-gate WPG SETs was also successfully fabricated for the first time and the inverter operation was also confirmed at 1.7 K.
- Japan Society of Applied Physicsの論文
- 2001-03-30
著者
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Hasegawa Hideki
Research Center for Integrated Quantum Electronics (RCIQE) and Graduate School of Information Science and Technology, Hokkaido University, North 13, West 8, Kita-ku, Sapporo 060-8628, Japan
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Hasegawa Hideki
Research Center for Interface Quantum Electronics and Graduate School of Electronics and Information Engineering, Hokkaido University, North 13, West 8, Kita-ku, Sapporo 060-8628, Japan
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Kasai Seiya
Research Center for Integrated Quantum Electronics (RCIQE) and Graduate School of Information Science and Technology, Hokkaido University, North 13, West 8, Sapporo 060-8628, Japan
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