Shot noise of the electrical current through magnetic atoms and molecules

电流通过磁性原子和分子的散粒噪声

• 批准号: 426617177
• 负责人: Professor Dr. Richard Berndt
• 金额: --
• 依托单位: Institut für Experimentelle und Angewandte Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/426617177?language=en
• 关键词: Shot; noise; electrical; current; through

Electrical current inevitably exhibits noise, in part because it is comprised of single charge carriers (usually electrons). This so-called shot noise contains information that cannot be accessed with measurements of the average current alone. In particular, shot noise depends on the kind of charge carriers and their mutual interactions. Therefore, we want to use scanning tunnelling microscopes to measure the shot noise of the current through single magnetic atoms and molecules. Based on theoretical considerations, we expect that the noise will be unusual in these cases. Our measurements will be the first of this kind and will help to better understand the magnetic and electrical properties of the smallest man-made structures.

电流不可避免地表现出噪声，部分原因是它由单个电荷载流子（通常是电子）组成。这种所谓的散粒噪声包含的信息不能单独通过测量平均电流来获取。特别是，散粒噪声取决于电荷载流子的种类及其相互作用。因此，我们希望使用扫描隧道显微镜来测量电流通过单个磁性原子和分子的散粒噪声。基于理论上的考虑，我们预计在这些情况下噪声将是不寻常的。我们的测量将是第一次，将有助于更好地了解最小人造结构的磁和电特性。