Electronic structure of aromatic hydrocarbon superconductors studied by photoemission spectroscopies

2014 Fiscal Year Final Research Report

• Project/Area Number: 24340086
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Okayama University
• Principal Investigator: YOKOYA Takayoshi 岡山大学, 自然科学研究科, 教授 (90311646)
• Co-Investigator(Renkei-kenkyūsha): WAKITA Takanori 岡山大学, 大学院自然科学研究科, 特任講師 (10423279) ; MURAOKA Yuji 岡山大学, 大学院自然科学研究科, 准教授 (10323635)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 芳香族炭化水素 / 超伝導 / 電子構造 / 光電子分光 / 真空蒸着薄膜

Outline of Final Research Achievements

Electronic states of potassium (K) doped picene have been studied by photoemission spectroscopies. Resistivity and GIXD measurements have been also performed on picene films synthesized under ultrahigh vacuum. Photoemission studies on K evaporated picene films showed appearance and disappearance of Fermi edge as a function of K concentration, suggesting the metallic nature of the picene film with certine K concentration. Resistivity change as a function of evaporation time shows characteristic two-peak structure, indicating K doping into a pristine picene film. GIXD studies indicate that picene films with different orientations can grow depending on the substrates.

Free Research Field

光電子固体物性