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

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）是研究关联电子系统奇异电子基态的原子级分辨率不可缺少的工具。此外，自旋自由度可以在自旋极化扫描隧道显微镜（SP-STM）中获得。这种方法提供了独特的洞察力的相关电子系统的电子和磁性。在这个项目中，我将使用（SP-）STM/STS的研究在原型相关电子系统的自旋和电荷有序现象。该项目的重点将是过渡金属氧化物（TMO）和铁磷属元素化物超导体。SP-STM方法将应用于铜氧化物高温超导体和铁磷属元素化物铁基超导体等典型化合物的研究。作为最终目标，我们将研究非常规高温超导体Bi_2Sr_2CaCu_2 O_（8 +d）的电荷和自旋有序性。

项目成果

Band-gap engineering by Bi intercalation of graphene on Ir(111)

Ir(111) 上石墨烯 Bi 插层的带隙工程

• DOI: 10.1103/physrevb.93.165437
• 发表时间: 2016
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: J. Warmuth;A. Bruix;M. Michiardi;T. Hänke;M. Bianchi;J. Wiebe;R. Wiesendanger;B. Hammer;P. Hofmann;A. A. Khajetoorians
• 通讯作者: A. A. Khajetoorians

Spatial variation of the two-fold anisotropic superconducting gap in a monolayer of FeS e 0.5 T e 0.5 on a topological insulator

拓扑绝缘体上单层 FeS e 0 5 T e 0 5 中两倍各向异性超导能隙的空间变化

• DOI: 10.1103/physrevb.95.104509
• 发表时间: 2017
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Kamlapure;S. Manna;L. Cornils;T. Hänke;M. Bremholm;Ph. Hofmann;J. Wiebe;R. Wiesendanger
• 通讯作者: R. Wiesendanger

Atomically resolved magnetic structure of a Gd-Au surface alloy

• DOI: 10.1103/physrevb.99.174419
• 发表时间: 2019-05-21
• 期刊: PHYSICAL REVIEW B
• 影响因子: 3.7
• 作者: Bazarnik, Maciej;Abadia, Mikel;Wiesendanger, Roland
• 通讯作者: Wiesendanger, Roland