Many-Body Interactions in Two-Dimensional Systems by Angle-Resolved Photoemission

该个人调查员奖授予波士顿学院的一名年轻私家侦探。实验项目是利用高分辨率角分辨光电子能谱（ARPES）研究新型二维电子材料中的多体相互作用。更具体地说，将在四种不同但相关的二维超导体中进行多体相互作用的系统ARPES研究-具有不同掺杂水平的Tl(2)Ba(2)CuO（6+x）薄膜（最佳掺杂样品的Tc约为85K），钌酸盐(即Sr(2)RuO(4)， Tc约为1K)，铁磁性超导体RuSr(2)GdCu（2)O(8)）和层状氮化铪(即Li(x)（THF)(y)HfNCl, Tc=25.5K）。这些研究不仅将回答许多与这些材料直接相关的问题，而且将促进对高温超导性的认识。这些结果将为理解维数对多体相互作用和超导性的影响提供重要信息。该研究项目还将通过向本科生和研究生介绍一些令人兴奋的新材料、前沿技术和凝聚态物理基础，为他们提供良好的培训。这种培训将为他们在学术界、工业界或政府的一系列职业生涯做好准备。该个人研究者奖授予波士顿学院的一名年轻私家侦探。实验项目是利用高分辨率角分辨光电子能谱（ARPES）研究一些新发现的二维电子材料中的多体相互作用。这些材料显示出一些新的特性，如高温超导性——无损耗地传导电流。鉴于这些材料的巨大应用潜力，对它们的基本理解是很重要的。ARPES是一种探测多体相互作用的强大技术，多体相互作用通常是这些材料新特性的原因。这一建议的结果将为理解高温超导和其他有趣的现象提供重要的信息。该研究项目还将通过向本科生和研究生介绍一些令人兴奋的新材料、前沿技术和凝聚态物理基础，为他们提供良好的培训。这项培训将为他们在学术界、工业界或政府的一系列职业生涯做好准备

This individual investigator award is to a young PI at Boston College. The experimental project is to study many-body interactions in novel two-dimensional electronic materials by using high-resolution angle-resolved photoelectron spectroscopy (ARPES). More specifically, systematic ARPES studies of many-body interactions will be conducted in four different but related two-dimensional superconductors - Tl(2)Ba(2)CuO(6+x) thin films with different doping levels (Tc about 85K for optimally doped samples), ruthenate (i.e., Sr(2)RuO(4), Tc about 1K), ferromagnetic superconductor RuSr(2)GdCu(2)O(8), and layered hafnium nitride (i.e., Li(x)(THF)(y)HfNCl, Tc=25.5K). Such studies will not only answer many questions directly related to these materials, but will also advance the understanding of the high temperature superconductivity. The results will provide important information on the understanding of the influence of dimensionality on many-body interactions and superconductivity. This research project will also provide good training for both undergraduate and graduate students by introducing them some exciting new materials, cutting-edge techniques and fundamental condensed matter physics. This training will prepare them for a range of careers in academe, industry or government.%%%This individual investigator award is to a young PI at Boston College. The experimental project is to study many-body interactions in some newly discovered two-dimensional electronic materials by using high-resolution angle-resolved photoelectron spectroscopy (ARPES). Those materials display some novel properties, such as high temperature superconductivity - conducting electric current with any loss. Fundamental understanding of these materials is important given their great application potential. ARPES is a powerful technique to probe many-body interactions, which are often responsible for novel properties of these materials. Results from this proposal will provide important information on the understanding of high temperature superconductivity and other interesting phenomena. This research project will also provide good training for both undergraduate and graduate students by introducing them some exciting new materials, cutting-edge techniques and fundamental condensed matter physics. This training will prepare them for a range of careers in academe, industry or government.***