Microscopic Investigation of quantum Hall effect

量子霍尔效应的显微研究

• 批准号: 130255566
• 负责人: Professor Dr. Markus Morgenstern
• 金额: --
• 依托单位: II. Physikalisches Institut B - Physik der kondensierten Materie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/130255566?language=en
• 关键词: Microscopic; Investigation; quantum; Hall; effect

Quantum Hall systems are paradigmatic with respect to the study of interacting electron systems, since they exhibit a simple band structure and allow to tune decisive parameters as electron density and magnetic field. Within this project, we will investigate quantum Hall systems based on InSb and graphene in real space using scanning tunnelng spectroscopy. Based on succesfull measurements of the percolating local density of states within a single Landu level, of the inner structure of Landau wave functions und the quantitative probing of short and long range electron electron interactions, we will tackle primarily interacting systems in real space. The ongoing transition towards graphene will allow tuning of the electron density and a direct comparison between transport and STS properties of the same sample.

量子霍尔系统是相互作用电子系统研究的典范，因为它们表现出简单的能带结构，并允许调整决定性的参数，如电子密度和磁场。在这个项目中，我们将研究量子霍尔系统的基础上，锑化铟和石墨烯在真实的空间使用扫描隧道光谱。基于对单个Landu能级内的局域态密度、朗道波函数的内部结构的成功测量以及对电子-电子短程和长程相互作用的定量探测，我们将主要研究真实的空间中的相互作用系统。正在进行的向石墨烯的过渡将允许调整电子密度，并直接比较相同样品的传输和STS特性。