Development of micro-imaging-spectroscopy system utilizing VUVSX synchrotron radiation source

2015 Fiscal Year Final Research Report

• Project/Area Number: 26610085
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: Nagoya University
• Principal Investigator: Ito Takahiro 名古屋大学, シンクロトロン光研究センター, 准教授 (50370127)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 光物性 / 放射光 / 強相関電子系 / ARPES / XAS / VUVSX

Outline of Final Research Achievements

We have developed a new spectroscopic research technique “VUVSX-micro-imaging spectroscopy” utilizing micro-focus and elemental selectivity of the VUVSX synchrotron radiation source. We applied the technique to Sm1-xYxS in which existence of the micrometer scale surface domain has been expected and to quasi-one dimensional micrometer size crystal of Ba3Co2O6(CO3)0.7. As results, we have found that the coexistence of localized and itinerant Sm 4f electrons in black-metallic Sm1-xYxS and the narrow band dispersion of t2g AB orbital below the Fermi level originating from the effect of CoO6－CO3 inter-chain interactions in Ba3Co2O6(CO3)0.7.

Free Research Field

数物系科学