Spin pumping through quantum dots

通过量子点的自旋泵浦

• 批准号: 40956896
• 负责人: Professor Dr. Jürgen König
• 金额: --
• 依托单位: Fakultät für Physik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/40956896?language=en
• 关键词: Spin; pumping; through; quantum; dots

A substantial aspect of semiconductor spintronics is the controlled generation and manipulation of spin-polarized carriers in semiconductors. Both in the context of nanoscopic spintronic devices and quantum computation, one may go down to coherently manipulate a few or even individual spins. The main objective of the present project is to theoretically analyze schemes for pumping spin through quantum dots. The appeal of such a scheme lies in the possibility to inject in a controlled way individual spins into a semiconductor, and manipulating them coherently. An important role will be played by Coulomb interaction effects in the quantum dot, that inevitably affect electronic transport in nanoscopic devices. We develop and apply theoretical tools for describing spin pumping through quantum dots in order to find suitable pumping schemes for spintronic applications.

半导体自旋电子学的一个重要方面是半导体中自旋极化载流子的受控产生和操纵。在纳米自旋电子器件和量子计算的背景下，人们可以相干地操纵几个甚至单个自旋。本项目的主要目标是从理论上分析通过量子点泵浦自旋的方案。这种方案的吸引力在于可以以可控的方式将单个自旋注入半导体，并连贯地操纵它们。量子点中的库仑相互作用将扮演重要的角色，它不可避免地影响纳米器件中的电子输运。我们开发和应用理论工具来描述通过量子点的自旋泵浦，以找到合适的抽运方案自旋电子学的应用。