ERA NanoSci - Coupling of Single Quantum Dots to Two-Dimensional Systems

ERA NanoSci - 单量子点与二维系统的耦合

• 批准号: 120319092
• 负责人: Professor Dr. Dieter Bimberg
• 金额: --
• 依托单位: Institut für Festkörperphysik
• 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 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/120319092?language=en
• 关键词: ERA; NanoSci; Coupling; Single; Quantum

The interaction between nano-objects of different dimensionality, e.g. electrostatic Coulomb-coupling of zerodimensional quantum dots (QDs) to two-dimensional (2D) systems is of fundamental interest and of great relevance for future charge-based memories. This interaction shall be studied here. The complementary expertise of the partners will allow the innovative approach to study for the first time Sb-based QDs combined with split-gate structures. Precise control of the charge-state of a single QD will be possible. Sb-based QDs in type-II heterostructures have strong hole confinement yielding a potential retention time of many years at room temperature, enabling the analysis of the influence of charged QDs on a 2D system up to 300 K. In the mid-long term perspective, the results will be important for future generations of memories: knowledge of the interaction of a 2D system with a single QD will allow us to reach the ultimate limits of charged-based memories (in particular Flash).

不同维度的纳米物体之间的相互作用，例如零维量子点（QD）到二维（2D）系统的静电库仑耦合，是基本的兴趣，并且对于未来的基于电荷的存储器具有很大的相关性。这里将研究这种相互作用。合作伙伴的互补专业知识将使创新方法首次研究与分裂栅结构相结合的Sb基量子点。精确控制单个QD的电荷状态将是可能的。Sb基量子点在第二类异质结构具有很强的空穴限制，在室温下产生许多年的潜在保留时间，使得能够分析带电量子点对高达300 K的2D系统的影响。从中长期的角度来看，这些结果对未来的存储器将非常重要：2D系统与单个QD的相互作用的知识将使我们能够达到基于电荷的存储器（特别是Flash）的极限。

项目成果

Time-resolved detection of many-particle hole states in InAs/GaAs quantum dots using a two-dimensional hole gas up to 77 K

使用高达 77 K 的二维空穴气体对 InAs/GaAs 量子点中的多粒子空穴态进行时间分辨检测

• DOI: 10.1002/pssc.201100218
• 发表时间: 2012
• 期刊: Physica Status Solidi (c)
• 作者: T. Nowozin;A. Marent;D. Bimberg;A. Beckel;B. Marquardt;A. Lorke;M. Geller
• 通讯作者: M. Geller