Acquisition of a Low Temperature and High Magnetic Field Optical Facility

低温强磁场设备需要与现有的光学和准光学测量配置相结合，以探索各种新型固体电子态的电动力学。该设施是一个He3系统与一个由分裂环磁铁提供的9T磁场相结合。在无线电到毫米波频谱范围内，将采用传统的He3系统（连同同轴电缆和波导接入配置）。此外，将为工作在亚毫米波到红外频率的光谱仪提供光学通道（由专门设计的光学窗口提供）。该设备将用于测量与频率相关的复合电导率，当与施加的交流场相关的能量hw，热能kT和与磁场相关的能量BH可以在很大范围内变化时。实验将主要在电子系统的破缺对称基态下进行。这项研究开发了多种测量技术，可以在极宽的光谱范围内（从音频到红外频率）探索固体的电动力学。在这项建议中，要求提供资金以购置一个低温和高磁场设施，以便扩大该区域的测量范围，并研究以前无法对金属进行研究的许多现象。这些设备用于研究各种新型材料的性能

A low-temperature and high-magnetic field facility is requested for combination with existing optical and quasi- optical measurement configurations to enable the exploration of electrodynamics of various novel electron states of solids. The facility is a He3 system combined with a 9T magnetic field which is provided by a split ring magnet. A conventional He3 system will be employed (together with coaxial cable and wave guide access configuration) in the radio to millimeter wave spectral range. In addition, optical access (provided by specially designed optical windows) will be provided for spectrometers operating at submillimeter wave to infrared frequencies. The facility will be used to measure the frequency dependent complex conductivity under circumstances when the energy related to the applied ac field hw , the thermal energy kT and the energy associated with the magnetic field BH can be varied over substantial ranges. Experiments will be conducted on interacting electron systems mainly in their broken symmetry ground states. %%% This research has developed a variety of measurement techniques which allow the exploration of electrodynamics of solids in an extremely broad spectral range, from audio to infrared frequencies. In this proposal, funds are requested to acquire a low-temperature and high-magnetic field facility in order to expand measurement in region and to a host of phenomenon that cannot be studied previously for metals. These facilities are used to study the properties of various novel materials having