Transport spectroscopy and hybrid devices of transition metal dichalcogenide nanotubes

过渡金属二硫族化物纳米管的传输光谱和杂化器件

• 批准号: 438640730
• 负责人: Dr. Andreas Klaus Hüttel
• 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
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/438640730?language=en
• 关键词: Transport; spectroscopy; hybrid; devices; transition

Research on quasi-two dimensional, planar transition metal dichalcogenides (TMDCs) is attracting significant attention in every respect. However, not much is known on the low temperature transport properties of TMDC nanotubes. To the best of the applicant's knowledge, apart from our own recent article [doi:10.1002/pssr.201900251] no publications exist so far on Coulomb blockade and low temperature transport spectroscopy; first works in literature show highly promising results on intrinsic superconductivity of the nanotubes at strong ionic doping. In this project, we will investigate semiconducting and superconducting properties of different nanotube materials, starting with MoS2. Using gate-defined potentials and local oxide layers preventing ionic doping, we shall then design novel devices which combine normal-conducting and intrinsically superconducting segments within the same quasi-one dimensional nanotube. Since strong spin-orbit interaction is known to be present in TMDCs, this opens up perspectives towards topological superconductivity and Majorana zero modes.

准二维平面过渡金属二硫属化合物（TMDCs）的研究正受到各方面的关注。然而，对TMDC纳米管的低温输运性质知之甚少。据申请人所知，除了我们自己最近的文章[doi：10.1002/pssr.201900251]之外，迄今为止还没有关于库仑阻塞和低温输运光谱的出版物;文献中的第一篇文章显示了关于强离子掺杂下纳米管的本征超导性的非常有希望的结果。在这个项目中，我们将研究不同纳米管材料的半导体和超导特性，从MoS 2开始。使用栅极定义的电势和防止离子掺杂的局部氧化物层，我们将设计新型器件，该器件将正常导电和本质上超导的部分结合在同一准一维纳米管内，联合收割机。由于强自旋轨道相互作用是已知的，存在于TMDC，这开辟了前景拓扑超导性和马约拉纳零模式。