Acquisition of a UV Photon Sourse for Novel Electronic Materials Research and Education

这笔拨款为波士顿学院新型电子材料研究和教育的真空紫外（VUV）光子源的获取提供支持。与传统的VUV源相比，这种微波驱动的VUV源产生的通量提高了200倍，分辨率提高了10倍。几个研究项目需要这种新仪器：(1)测量单层铜薄膜的电子结构。单晶薄膜可以很容易地控制在一个大范围内的连续掺杂水平。为了克服切割的困难，我们建议在原位退火薄膜并将其转移到测量室。(2)在排列良好的碳纳米管中寻找自旋-电荷分离的证据。利用生长整齐排列的碳纳米管的能力，我们计划直接观察自旋-电荷分离现象。(3)准一维有机超导体的电子结构探测。这种新型VUV源的前所未有的能力将使我们能够在校园实验室中设计和进行许多新的实验来研究各种新型电子材料。这些研究项目将促进我们对莫特物理、新型超导、卢廷格液体和费米液体的理解，这些都是现代凝聚态物理的重要组成部分。此外，对VUV光源的改进和改进将对光电领域的仪器发展做出重大贡献。获得这种强大的VUV光子源将对博士后，研究生和本科生的教育和培训产生重大影响，吸引他们到一个大大改进的研究设施。对于本科生来说尤其如此，因为它位于校园内。我们会鼓励少数族裔参与建议项目。这将向他们介绍令人兴奋的新材料，尖端技术和基本凝聚态物理。这个项目的合作性质将有利于他们的长期学术发展。最后，这个项目将大大提高我校以及区域光电社区的基础设施。

This grant provides support for the acquisition of a vacuum ultraviolet (VUV) photon source for novel electronic materials research and education at Boston College.Comparing to a conventional VUV source, this microwave driven VUV source has the capability of generating 200 times more flux and improving the resolution by 10 times. Several research projects require this new instrument: (1) Measuring the electronic structures of the single-layered cuprate thin films. The single-crystalline thin films can be easily controlled to a continuous doping level over a wide range. To overcome the difficulty of cleaving, we propose to anneal thin films in situ and transfer them to a measurement chamber. (2) Searching for evidence of spin-charge separation in well-aligned carbon nanotubes. With the capability of growing well-aligned carbon nanotubes, we plan to directly observe the phenomenon of spin-charge separation. (3) Probing electronic structures of quasi-1D organic superconductors. The unprecedented capability of this new VUV source will enable us to design and conduct many new experiments to study various novel electronic materials in an on-campus laboratory. These research projects will advance our understanding of Mott physics, novel superconductivity, Luttinger liquid, and Fermi liquid, all of which are the essential parts of modern condensed matter physics. In addition, modifications and improvements on this VUV source will be a major contribution to the instrumentation development in the photoemission community. The acquisition of this powerful VUV photon source will make a significant impact to the education and training of post-docs, graduate and undergraduate students by attracting them to a much-improved research facility. This is especially true for undergraduate students due to its on-campus location. We will encourage underrepresented minorities to participate the proposed projects. This will introduce them to exciting new materials, cutting-edge techniques, and fundamental condensed matter physics. The collaborative nature of this project will be beneficial to their long-term academic development. Finally, this project will greatly enhance the infrastructure at our university as well as in the regional photoemission community.