4-Tip Scanning Tunneling Microscope for Ultrahigh Vacuum Operation at 100 mK

用于 100 mK 超高真空操作的 4 头扫描隧道显微镜

• 批准号: 458555100
• 金额: --
• 依托单位: Rheinisch-Westfälische Technische Hochschule Aachen
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2021
• 资助国家: 德国
• 起止时间: 2020-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/458555100?language=en
• 关键词: Tip; Scanning; Tunneling; Microscope; Ultrahigh

The project combines key expertise of the II. Institute of Physics at RWTH Aachen University and the Peter-Grünberg Institute 3 (PGI-3) at Forschungszentrum Jülich to set up a worldwide unique instrument supporting, in particular, the aims of the excellence cluster ML4Q. It will be the first four-tip scanning tunneling microscope that operates at temperatures below 1 K. We aim to work at temperatures down to 0.1 K within ultrahigh vacuum additionally providing a 3D magnetic vector field and high frequency voltages up to 30 GHz at each tip. This addresses the detection and spectroscopy as well as first quantum transport experiments of Majorana zero modes within nanostructures that are prepared in-situ with the ultimate aim to achieve robustly operating Majorana qubits. The assembly of such qubits is one central promise of the excellence cluster ML4Q. As such, the instrument will crucially contribute to the success of the cluster. The novel instrument will, moreover, offer multiple options of other types of experiments as described in the “Supplements of Research”.While the II. Institute of Physics contributes its long-term expertise of scanning tunneling microscopy at sub-1K temperatures and high frequency to the project, PGI-3 is a worldwide leading group concerning the set-up of four-tip scanning tunneling microscopes.

该项目结合了亚琛工业大学 II. 物理研究所和于利希研究中心 Peter-Grünberg Institute 3 (PGI-3) 的关键专业知识，建立了一个全球独特的仪器，特别支持卓越集群 ML4Q 的目标。它将是第一台在低于 1 K 的温度下工作的四尖端扫描隧道显微镜。我们的目标是在超高真空下工作在低至 0.1 K 的温度下，此外还提供了每个尖端的 3D 磁场和高频电压高达 30 GHz，这解决了纳米结构内马约拉纳零模式的检测和光谱以及首次量子输运实验，这些纳米结构是原位制备的，最终目标是实现稳健运行的马约拉纳。这种量子位的组装是卓越集群 ML4Q 的核心承诺之一，因此该仪器将为集群的成功做出至关重要的贡献。虽然 II. 物理研究所为该项目贡献了其在低于 1K 温度和高频的扫描隧道显微镜方面的长期专业知识，但 PGI-3 是世界领先的。关于四尖扫描隧道显微镜设置的小组。