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：这些新型分层 III-VI 稀磁半导体 (DMS) 系统补充了 II-VI DMS 的巨大进步以及 Mn 掺杂 III-V DMS 系统的最新成果。 III-VI DMS Ga1-xMnxSe 在 1.804 eV 处表现出由 Mn 引起的强红光发射。 GaSe本身以其卓越的非线性光学特性而闻名，是一种有前途的光电应用材料。 将详细研究 Ga1-xMnxS 和 In1-xMnxS，然后研究 In1-xMnxSe、Ga1-xMnxSe 以及对 Fe 和 Co 基材料的调查。 Ga1-xMnxS 的非线性磁化尺度分析表明，在 11 K 时存在真正的自旋玻璃转变。这一重要结果增加了一类全新的自旋玻璃材料，并提出了空间维度对自旋玻璃转变的有趣问题。该系统中的玻璃化转变。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（目前在物理学中代表性不足）。 该项目还使该本科机构有幸与一个本科机构和两个研究生机构的研究小组共享最先进的 SQUID 磁力计和物理特性测量系统（2 个主要研究仪器）。 非技术：新分层薄膜稀磁半导体 (DMS) 系统补充了基于其他半导体主体的系统所取得的巨大进步。镓(Ga)-锰(Mn)-硒(Se)系统表现出强烈的红光发射。 GaSe本身以其卓越的光学特性而闻名，是平板电视屏幕等光电应用中很有前途的材料。 我们将研究其中几种类型的材料，以进一步探索基于这些层状半导体主体的最新一类 DMS 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（目前在物理学中代表性不足）。 该项目还使该本科机构有幸与该本科机构和两个研究生机构的研究小组共享两个最先进的测量系统。