Infrared spectroscopy under extreme conditions

We constructed a magneto-optical microspectroscopy apparatus in the infrared region using a synchrotron radiation, SPring-8. In the apparatus, an infrared microscope with the spatial resolution of similar to 11 mum is combined with low temperatures (greater than or equal to 3.5 K) and high magnetic fields (less than or equal to 14 T). The purpose is to investigate the electronic structure under extreme conditions of tiny materials such as organic conductors and of small region and the spatial distribution of electronic structures. After the installation of high pressure cells, optical measurements under multiple-extreme conditions is available. The specification of the apparatus and recent results of an organic superconductor are presented. (C) 2003 Elsevier Science B.V. All rights reserved.