Optical Spectroscopy of Strongly Correlated (MOTT-HUBBARD, Heavy-Fermion, Unconventional Superconductor) Materials Tuned Pressure

Goncharov, A ; Struzhkin, V V

Lawrence Livermore National Laboratory

关键词: Optical Properties;    75 Condensed Matter Physics, Superconductivity And Superfluidity;    Fluorescence;    Absorption;    36 Materials Science;   

DOI  :  10.2172/15013699
RP-ID  :  UCRL-TR-200960
RP-ID  :  W-7405-ENG-48
RP-ID  :  15013699

美国|英语

来源: UNT Digital Library

【 摘 要 】

During the past years, the Co-PI's have been responsible for the development and operation of optical techniques (Raman, IR, fluorescence, absorption and reflectance spectroscopy at ultrahigh pressures and high and low temperatures) which have proven to be extremely powerful for studying low-Z, molecular solids including hydrogen, ice, etc. (see results below). Meanwhile, it has become increasingly clear that optical spectroscopy has an equally extraordinary potential for studying metals and superconductors at ultrahigh pressures, thus the result will have a major impact on material research. However, because of the extreme difference in optical properties of opaque metals and transparent insulating molecular solids, successful accomplishment of the present project will require substantial effort in improving the present equipment and developing new techniques, and funds for this are requested here. Below we provide a short description of the work done and techniques developed during the last years. We also propose to explore new frontiers in compressed materials close to the insulator-metal boundaries, spin-crossover, and other quantum critical points.