Measuring spins in mesoscopic systems by means of ressistively-detected nuclear magnetic resonance

2015 Fiscal Year Final Research Report

• Project/Area Number: 24684021
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: Kawamura Minoru 国立研究開発法人理化学研究所, 創発物性科学研究センター, 専任研究員 (60391926)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 核磁気共鳴 / 超微細相互作用 / 量子ドット / 量子ポイントコンタクト / 近藤効果 / 電子相関

Outline of Final Research Achievements

We have demonstrated that nuclear magnetic resonance signals from semiconductor nano-scale devices can be detected through changes in the conductance of the devices. A quantum dot and a quantum point contact, which are basic components of the mesoscopic systems, were chosen as prototypical nano-scale quantum devices. Using the resistively-detected nuclear magnetic resonance technique, we have studied electron spin dynamics in a quantum dot and magnetization of a quantum point contact which has not been measured otherwise.

Free Research Field

半導体物理学