Spin detection and control of spin relaxation process in InAs quantum dots

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K17681
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: Osaka University
• Principal Investigator: Kiyama Haruki 大阪大学, 産業科学研究所, 助教 (80749515)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 量子ドット / 電荷検出 / スピン検出

Outline of Final Research Achievements

We worked on the detection of electron charge and spin in InAs self-assembled quantum dots. We used a quantum dot as a charge sensor to detect single-electron charging events in another adjacent dot. In addition, we improved the sensitivity of the quantum dot to electrostatic environment by narrowing the electrodes. We also worked on SiGe self-assembled quantum dots, which may exhibit excellent hole-spin coherence. We fabricated single-hole transistor devices, and observed signatures of Kondo effect.

Free Research Field

半導体低次元物性