Inelastic Light Scattering Studies of Quantum-Layered Semiconductors and Metallic (Superconducting) Microstructures

量子层半导体和金属（超导）微结构的非弹性光散射研究

• 批准号: 8703980
• 负责人: Ratnasingham Sooryakumar
• 金额: --
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-01 至 1990-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8703980&HistoricalAwards=false
• 关键词: Inelastic; Light; Scattering; Studies; Quantum

Modulated microstructures offer unique systems to investigate electronic and vibrational behavior under reduced dimensions. In this program, Raman and Brillouin scattering methods will be applied to a broad range of such semiconducting and metallic systems. Resonant Brillouin scattering experiments on semiconductor quantum layers focusses on elucidating the complex, yet important, valence subband structure. Quantitative estimates for several fundamental electron and lattice parameters of these ultra thin layers will be realized. Research on zinc arsenide epilayers, including structures grown on indium phosphide, that are a new and novel class of superlattices, provides exciting prospects for fundamental results. This thrust is also expected to have a significant impact on device applications, as for example long wavelength photonic devices. Interest in metallic superlattices is, primarily, understanding effects of structural anisotropy and tunable coherence lengths on electronic excitations in normal and superconducting states. The overall program also provides valuable structural and optical characterization that are valuable for improved fabrication of novel modulated systems.

调制微结构提供了独特的系统来研究降维下的电子和振动行为。在这个项目中，拉曼和布里渊散射方法将被广泛应用于这样的半导体和金属系统。半导体量子层上的共振布里渊散射实验致力于阐明复杂而又重要的价子带结构。将实现对这些超薄层的几个基本电子参数和晶格参数的定量估计。对砷化锌外延层的研究，包括生长在磷化铟上的结构，这是一类新型的超晶格，为基本结果提供了令人兴奋的前景。这一推力预计也将对设备应用产生重大影响，例如长波长光子设备。对金属超晶格的兴趣主要是了解结构各向异性和可调谐相干长度对正常态和超导态电子激发的影响。整个计划还提供了有价值的结构和光学表征，这对于改进新型调制系统的制造很有价值。