MRI: Development of a Full-Muller-Matrix Spectroscopic Ellipsometer for Far-IR Radiation at the National Synchrotron Light Source (NSLS-BNL)

技术摘要：本MRI提案的重点是发展一个全穆勒矩阵光谱椭偏仪的宽带光谱范围的远红外同步辐射。该椭偏仪将安装在国家同步加速器光源（NSLS）的一条红外光束线上，并将用于NSLS的一般用户实验计划，并在未来用于NSLS-II。拟议的仪器将在从事太赫兹和远红外光谱学工作的不同大学之间建立更密切的合作，并将支持凝聚态物理学的跨学科项目。所提出的发展的独特功能包括同步测量的归一化谱的穆勒矩阵组件（包括第4行和第4列）的帮助下，旋转延迟器和偏振器提供直接的信息有关的真实的和虚部的介电常数和磁导率张量的调查材料。该仪器将有助于分析多铁性材料、超薄高K电介质膜、磁性纳米结构氧化物、超导膜和其他强相关材料的介电和磁性。将在高达10 T的外部磁场的影响下，在高达10 kbar的单轴压力下，以及在4至350 K之间的温度范围内，研究样品的性质。基础研究、新仪器开发、研究生和本科生教育之间的整合，以及大学和布鲁克海文国家实验室之间的密切合作，是该提案的其他重要方面。非技术摘要：该MRI提案的重点是开发用于远红外和太赫兹光谱范围的先进光谱椭圆偏振仪。该仪器将利用国家同步加速器光源（NSLS）中最明亮的人造辐射源的优势。研制完成后，该椭偏仪将安装在NSLS的红外光束线上，并将提供给光束线用户的广泛团队。拟议的仪器将在THz和远红外光谱领域工作的不同大学团体之间建立更密切的合作，并将支持凝聚态物理学的跨学科项目。建议的椭圆偏振仪的独特功能包括测量和分析的线性和圆偏振的光从样品反射提供直接的信息有关的介电和磁性能的调查材料。建议的椭偏仪将有助于分析材料的未来纳米电子学，如多铁性，超薄高K电介质薄膜，磁性纳米结构氧化物，超导薄膜，和其他强相关的材料。样品的性质将在外部磁场的影响下，在单轴压力下，在4和350 K之间的温度范围内进行研究。基础研究，新仪器开发，研究生和本科生教育之间的整合，以及大学和布鲁克海文国家实验室之间的密切合作是该提案的其他重要方面。

Technical Abstract:This MRI Proposal focuses on the development of a full-Muller-matrix spectroscopic ellipsometer for a broadband spectral range of the far-infrared synchrotron radiation. This ellipsometer will be installed at one of the infrared beamlines of the National Synchrotron Light Source (NSLS) and will become available to General User experimental programs at NSLS, and in the future, at NSLS-II. The proposed instrument will establish closer collaboration between different Universities working with the THz and far-infrared spectroscopy and will support interdisciplinary projects in Condensed Matter Physics. The unique features of the proposed development include simultaneous measurements of normalized spectra of the Muller-matrix components (including the 4th row and 4th column) with the help of rotating retarders and polarizers providing direct information about the real and imaginary parts of both electrical permittivity and magnetic permeability tensors of the investigated materials. The proposed instrument will facilitate analysis of dielectric and magnetic properties of multiferroic materials, ultra-thin high-K dielectric films, magnetic nanostructured oxides, superconducting films, and other strongly correlated materials. The sample properties will be studied under the influence of an external magnetic field up to 10 T, under uniaxial pressure up to 10 kbars, and in the temperature range between 4 and 350 K. The integration between fundamental research, new instrumentation development, and the education of graduate and undergraduate students, as well as a close collaboration between Universities and Brookhaven National Lab are other important aspects of this proposal.Non-Technical Abstract: This MRI Proposal focuses on the development of an advanced spectroscopic ellipsometer for far-infrared and THz spectral ranges. This instrument will utilize the advantages of the brightest manmade source of radiation at the National Synchrotron Light Source (NSLS). Upon development, this ellipsometer will be installed at the infrared beamline of NSLS and will become available to the broad team of beamline Users. The proposed instrument will establish closer collaboration between different University groups working in the field of THz and far-infrared spectroscopy and will support interdisciplinary projects in Condensed Matter Physics. The unique features of the proposed ellipsometer include measurements and analysis of linear and circular polarization of light reflected from the samples providing direct information about dielectric and magnetic properties of the investigated materials. The proposed ellipsometer will facilitate analysis of materials for the future nanoelectronics, such as multiferroics, ultra-thin high-K dielectric films, magnetic nanostructured oxides, superconducting films, and other strongly correlated materials. The sample properties will be studied under the influence of an external magnetic field, under uniaxial pressure, and in the temperature range between 4 and 350 K. The integration between fundamental research, new instrumentation development, and the education of graduate and undergraduate students, as well as a close collaboration between Universities and Brookhaven National Lab are other important aspects of this proposal.