CAREER: Synthesis, Self-Assembly and Characterization of Mn-doped III-V DMS QDs for Spintronic Importance

职业：Mn 掺杂 III-V DMS 量子点的合成、自组装和表征对自旋电子学的重要性

• 批准号: 0449580
• 负责人: Jiye Fang
• 金额: --
• 依托单位: University of New Orleans
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-03-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0449580&HistoricalAwards=false
• 关键词: CAREER; Synthesis; Self; Assembly; Characterization

The objective of this work is to develop monodisperse III-V diluted magnetic semiconductor quantum dots (DMS QDs) as ideal domains for potential applications of spintronics especially for quantum computing (QC). The scope of the proposed project covers a broad range of fundamental education components, including Solid State Inorganic Chemistry, Physical Chemistry, Materials Chemistry, Organometallic Chemistry, Solid State Physics, Structural and Magnetic Characterization. The significance of this research endeavor lies in the following three aspects: (1) creating a novel exploration avenue to chemically develop promising DMS QDs by extending the DMS system from II-VI or IV-VI to III-V compounds and doping them with manganese (Mn2+ ); (2) providing conclusive spin information and the viability of the proposed materials by evaluating the spin behaviors of one (or a few) quantum-confined electron(s) trapped in a QD; (3) proving some spintronic concepts in nanophase based on the experimental observation on real QDs. The broad impacts of this project are three-fold: (1) to attract, train and position students in various levels (high-school, undergraduate, graduate, and post-doctoral) to this promising interdisciplinary field; (2) to enhance the research and education capability of the State of Louisiana in Materials Chemistry and NanoScience; (3) to closely link academia to industry and to enhance the students' ability in solving industrial problems through these cutting-edge research techniques.The objective of this work is to explore the further development of high-quality diluted magnetic semiconductor quantum dots (DMS QDs) as ideal materials for application in spin electronics (spintronics) with a particular use for quantum computing. The idea of using the electron spin of an atom as an additional degree of freedom in microelectronics materials related to information storage devices is feasible, and has received strong support from experiments. Such a spintronic effect may lead to a revolution in the next generation of electronic devices for memory storage and quantum computing. Our work focuses on (1) the preparation and the manipulation of various DMS QDs (mainly for III-V Group elements) with size-control and (2) the development of systematic analytical methods to characterize the spin behavior and the collective properties of these novel QDs for possible use in quantum computing design. State of the art quantum computing designs are theoretically based on DMS QDs by trapping a spin of one (or a few) electron(s) inside a dimension-restricted, isolated semiconductor unit. To experimentally achieve this objective, the fabrication of the promising DMS QDs is the first challenge, followed by the characterization of the spin behavior of these QDs. The proposed research program will speed up exploration in this promising direction, and will also enhance various activities of high-tech K12 education in the State of Louisiana. Throughout the course of this project, the PI/PD will continuously participate in a high school student outreach program, high school teacher summer training program and REU summer research program already established at the University of New Orleans.

这项工作的目标是开发单分散III-V族稀磁半导体量子点（DMS量子点）作为自旋电子学的潜在应用，特别是量子计算（QC）的理想域。拟议项目的范围涵盖广泛的基础教育组成部分，包括固态无机化学，物理化学，材料化学，有机化学，固态物理，结构和磁性表征。本研究奋进的意义在于以下三个方面：（1）通过将DMS体系从II-VI或IV-VI族扩展到III-V族化合物并掺杂Mn ~（2+），为化学开发有前途的DMS量子点开辟了一条新的探索途径;（2）通过评估一种材料的自旋行为，（3）基于对真实的量子点的实验观察，证明了纳米阶段的自旋电子学概念。该项目的广泛影响有三个方面：（1）吸引、培养和定位不同层次的学生（高中，本科，研究生和博士后）到这个有前途的跨学科领域;（2）提高材料化学和纳米科学路易斯安那州的研究和教育能力;（3）将学术界与工业界紧密联系起来，通过这些尖端的研究技术，提高学生解决工业问题的能力。这项工作的目的是探索高科技的进一步发展，高质量的稀磁半导体量子点（DMS QD）是自旋电子学（spintronics）中应用的理想材料，特别是用于量子计算。利用原子的电子自旋作为与信息存储器件相关的微电子材料中的附加自由度的想法是可行的，并且得到了实验的有力支持。这种自旋电子效应可能会导致下一代存储器存储和量子计算电子设备的革命。我们的工作集中在（1）制备和操纵各种DMS量子点（主要是III-V族元素）的尺寸控制和（2）系统的分析方法来表征这些新的量子点的自旋行为和集体性质的发展可能用于量子计算设计。 现有技术的量子计算设计理论上基于DMS QD，其通过在尺寸受限的隔离半导体单元内捕获一个（或几个）电子的自旋。为了在实验上实现这一目标，有前途的DMS量子点的制造是第一个挑战，其次是这些量子点的自旋行为的表征。拟议的研究计划将加快这一有前途的方向的探索，并将加强路易斯安那州高科技K12教育的各种活动。在这个项目的整个过程中，PI/PD将继续参与高中学生外展计划，高中教师暑期培训计划和REU暑期研究计划已经在新奥尔良大学建立。