Development of nanofreezer substrate for realizing room-temperature operation of single-electron and spin devices

2014 Fiscal Year Final Research Report

• Project/Area Number: 24651168
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Microdevices/Nanodevices
• Research Institution: Shizuoka University
• Principal Investigator: IKEDA Hiroya 静岡大学, 電子工学研究所, 准教授 (00262882)
• Co-Investigator(Kenkyū-buntansha): HAYAKAWA Yasuhiro 静岡大学, 電子工学研究所, 教授 (00115453) ; SHIMOMURA Masaru 静岡大学, 工学研究科, 准教授 (20292279)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 熱電変換 / ベルチェ冷却 / ナノワイヤ / 量子効果デバイス

Outline of Final Research Achievements

In this study, we have investigated a novel cooling substrate based on thermoelectrics, named "nanofreezer substrate", in order to operate the quantum effect devices at room temperature. For enhancing the cooling efficiency, Seebeck coefficient, which is thermoelectromotive force at a temperature difference of 1K and an important parameter determining the efficiency, of SiGe material was measured. The Seebeck coefficient usually consists of contributions from electrons and lattice vibration, and we clarified the physical factors determining the lattice-vibration component. In addition, we have proposed a new fabrication process for the actual refrigerator and confirmed its fundamental properties.

Free Research Field

半導体量子物性