RUI: Exploration of the New Class of Layered III-VI Diluted Magnetic Semiconductors

RUI：新型层状 III-VI 稀磁半导体的探索

• 批准号: 0706593
• 负责人: Thomas Pekarek
• 金额: $ 22.5万
• 依托单位: University of North Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-05-15 至 2011-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0706593&HistoricalAwards=false
• 关键词: RUI; Exploration; New; Class; Layered

Technical:These new layered III-VI Diluted Magnetic Semiconductor (DMS) systems complement the enormous progress in the II-VI DMS and the more recent efforts in the Mn doped III-V DMS systems. The III-VI DMS Ga1-xMnxSe exhibits a strong red emission at 1.804 eV attributed to the Mn. GaSe itself is known for its remarkable nonlinear optical properties and is a promising material for photoelectronic applications. Ga1-xMnxS and In1-xMnxS will be investigated in detail followed by a study of In1-xMnxSe, Ga1-xMnxSe and a survey of Fe and Co based materials. Non-linear magnetization scaling analysis on Ga1-xMnxS establishes there is a true spin-glass transition at 11 K. This important result adds a whole new class of spin-glass materials and raises interesting questions of the effect of spatial dimensionality on the spin-glass transition in this system. The investigation of new materials is essential for discovering novel systems and properties that can be used in future devices. In terms of broader impacts, this project involves mentoring three undergraduate students each year. The research group currently includes 1 female student (currently an underrepresented group in physics). This project also allows this undergraduate institution the honor of sharing a state-of-the-art SQUID magnetometer and a Physical Property Measurement System (2 major research instruments) with research groups at one undergraduate and two graduate institutions.Non-Technical:Thes new layered thin film diluted magnetic semiconductor (DMS) systems complement the enormous progress made in systems based on other semiconductor hosts. The Galium(Ga)-ManganeseMn)-Selinium(Se) system exhibits a strong red light emission. GaSe itself is known for its remarkable optical properties and is a promising material for photoelectronic applications such as flat TV screens. Several of these type materials will be investigated to further explore the magnetic, thermal, and electrical properties of this newest class of DMS based on these layered semiconductor hosts. The investigation of new materials is essential for discovering novel systems and properties that can be used in future devices. In terms of broader impacts, this project involves mentoring three undergraduate students each year. The research group currently includes one female student (currently an underrepresented group in physics). This project also allows this undergraduate institution the honor of sharing two state-of-the-art measurement system with research groups at this undergraduate and two graduate institutions.

技术：这些新的分层III-VI稀磁半导体（DMS）系统补充了II-VI DMS的巨大进展和Mn掺杂III-V DMS系统的最新成果。 III-VI DMS Ga 1-xMnxSe在1.804 eV处表现出归因于Mn的强红光发射。 GaSe本身以其显著的非线性光学性质而闻名，是一种有前途的光电应用材料。 Ga 1-xMnxS和In 1-xMnxS将在In 1-xMnxSe、Ga 1-xMnxSe的研究以及Fe和Co基材料的调查之后被详细研究。 非线性磁化标度分析表明Ga_（1-x）Mn_xS在11 K时存在真正的自旋玻璃转变。 这个重要的结果增加了一个全新的自旋玻璃材料，并提出了有趣的问题，在这个系统中的自旋玻璃转变的空间维度的影响。新材料的研究对于发现可用于未来设备的新系统和特性至关重要。 就更广泛的影响而言，该项目每年涉及指导三名本科生。 该研究小组目前包括1名女学生（目前在物理学方面代表性不足）。 该项目还使该大学获得了与一所大学和两所研究生院的研究小组共享最先进的SQUID磁强计和物理特性测量系统（两种主要研究仪器）的荣誉。非技术：新的分层薄膜稀磁半导体（DMS）系统补充了基于其他半导体主机的系统所取得的巨大进展。镓（Ga）-锰（Mn）-硒（Se）体系具有较强的红光发射. GaSe本身以其显着的光学特性而闻名，是平板电视屏幕等光电应用的一种有前途的材料。 这些类型的材料中的一些将被研究，以进一步探索基于这些分层半导体主机的这种最新的DMS类的磁，热和电特性。 新材料的研究对于发现可用于未来设备的新系统和特性至关重要。 就更广泛的影响而言，该项目每年涉及指导三名本科生。 该研究小组目前包括一名女学生（目前在物理学方面代表性不足）。 这个项目也让这个本科机构的荣誉分享两个国家的最先进的测量系统与研究小组在这个本科和两个研究生机构。