电场驱动的自旋共振通过在表面交换合到单原子磁铁
Soo-Hyon Phark1,2,3, Hong Thi Bui1,2, Alejandro Ferrón4
1Center for Quantum Nanoscience, Institute for Basic Science (IBS), Seoul, 03760, Republic of Korea.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|July 19, 2023
概括
研究人员使用一种新的电子自旋共振 (ESR) 技术,证明了对表面单个自旋的连贯控制. 这种方法可以在没有直接尖端交互的情况下解决和控制旋转,为多量子位系统铺平了道路.
科学领域:
- 量子物理学的量子物理学
- 表面科学是一门科学.
- 材料科学是一种材料科学.
背景情况:
- 对于量子技术来说,对表面上的单个旋转的连贯控制至关重要.
- 在扫描道显微镜 (STM) 中的电子自旋共振 (ESR) 已使自旋操纵成为可能.
- 开发解决和控制多个旋转的新方法是一个持续的挑战.
研究的目的:
- 为了研究单个化Ti原子与表面上的Fe原子交换合的电子自旋共振 (ESR).
- 展示一种新的ESR方案,用于对单个旋转进行连贯的控制,而无需直接的尖端相互作用.
- 在表面上建立基于旋转的多量子比特系统的可行实施.
主要方法:
- 使用STM进行ESR的综合实验和理论建模.
- 原子操纵以将Fe原子放置在化Ti原子附近.
- 连续波和脉冲ESR测量以分析拉比率和旋转相互作用.
主要成果:
- 蒂斯宾的ESR显示了两个贡献:一个来自STM尖端,另一个来自交换合的Fe习惯.
- 铁对旋转相互作用的贡献与尖端的贡献相当,并且可以通过磁场进行调整.
- 新的ESR方案成功地解决并连贯控制了单个旋转,而没有直接的尖端磁相互作用.
结论:
- 一个新的ESR方案可以连贯控制表面上的单个旋转.
- 这种方法可以在不依赖于与STM尖端的磁相互作用的情况下解决旋转.
- 该研究提出了一种可行的方法,用于在表面上构建基于自旋的多量子比特系统.
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