U.S.- Spain Cooperative Research: Optical Studies of Carbon Nanotubes under High Magnetic Fields

这项为期三年的奖励将为亚利桑那州立大学的Jose Menendez与西班牙马德里自治大学的Jose Calleja一起工作提供支持。他们研究的主要目标是在高磁场下进行碳纳米管的非弹性光散射研究，以期表征纳米管样品，这些样品总是包含纳米管尺寸和结构的非均匀分布。此外，他们计划研究一些不寻常的磁场效应——从金属-绝缘体转变到一维金属中预测的佩尔斯畸变的增强——这些都是理论上预测的。这两个实验室是互补的。美国实验室配备了分辨率和对比度极高的拉曼仪器。西班牙实验室是世界上为数不多的能够在高达12T的电场和低至0.3 K的温度下进行常规拉曼测量的实验室之一。碳纳米管被认为是扫描探针显微镜的理想尖端材料，是复合材料的替代品

0072110MenendezThis three-year award will provide support for Jose Menendez of Arizona State University to work with Jose Calleja at the Universidad Autonoma de Madrid, Spain. The primary goal of their research is to perform inelastic light scattering studies of carbon nanotubes under high magnetic fields, in the expectation of characterizing nanotube samples, which always contain a heterogeneous distribution of nanotube sizes and structures. In addition, they plan to investigate some unusual magnetic field effects - ranging from a metal-insulator transition to an enhancement of the predicted Peierls distortion in 1D-metals -- that have been predicted theoretically.The two laboratories are complementary. The US laboratory is equipped with Raman instrumentation with extremely high resolution and contrast. The Spanish laboratory is one of the few in the world where Raman measurements with fields as high as 12T and temperatures as low as 0.3 K can be performed routinely. Carbon nanotubes have been proposed as the ideal tip materials for scanning probe microscopies, as an alternative to composite