Spin-polarized scanning tunneling spectroscopy on correlated electron systems

相关电子系统上的自旋偏振扫描隧道光谱

• 批准号: 219591251
• 负责人: Dr. Torben Hänke
• 金额: --
• 依托单位: Institut für Nanostruktur- und Festkörperphysik (INF)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/219591251?language=en
• 关键词: Spin; polarized; scanning; tunneling; spectroscopy; Spin; polarized; scanning; tunneling; spectroscopy

Scanning tunneling microscopy and spectroscopy (STM/STS) is an indispensable tool to study exotic electronic ground states of correlated electron systems with atomic resolution. Furthermore the spin-degree of freedom can be accessed in spin-polarized scanning tunneling microscopy (SP-STM). This method provides unique insight into the electronic and magnetic properties of correlated electron systems. In this project I will use (SP-) STM/STS for the investigation of spin and charge ordering phenomena in prototypical correlated electron systems. The focus of the project will be on transition metal oxides (TMO) and iron pnictide superconductors. The method of SP-STM will be applied to prototypical compounds such as cuprate high-temperature superconductors HTSC and the iron pnictide Fe-based superconductors. As the ultimate goal the charge and spin ordering of the unconventional high-temperature superconductor Bi2Sr2CaCu2O8+d will be investigated.

扫描隧道显微镜和光谱学（STM/STS）是研究具有原子分辨率相关电子系统的奇异电子接地态的必不可少的工具。此外，可以在自旋极化扫描隧道显微镜（SP-STM）中访问自由度。该方法为相关电子系统的电子和磁性提供了独特的见解。在这个项目中，我将使用（SP-）STM/STS来研究原型相关电子系统中的自旋和电荷顺序现象。该项目的重点将放在过渡金属氧化物（TMO）和铁皮剂超导体上。 SP-STM的方法将应用于原型化合物，例如Cuprate高温超导体HTSC和基于Pnictide Fe的铁基超导体。作为最终目标，将研究非常规高温超导体BI2SR2CACU2O8+D的电荷和旋转顺序。