Novel physical properties of layer-controlled graphene

2014 Fiscal Year Final Research Report

• Project/Area Number: 24740216
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: Tohoku University
• Principal Investigator: SUGAWARA Katsuaki 東北大学, 原子分子材料科学高等研究機構, 助教 (70547306)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: グラフェン層間化合物 / ナノ材料 / 超薄膜 / 多層シリセン層間化合物 / 角度分解光電子分光

Outline of Final Research Achievements

Recently, monolayer graphite (graphene) with Dirac electrons has attracted much attention because it shows various interesting physical properties. On the other hands, the detailed electronic structure depended on the number of layers in graphene related materials has not been well understood yet. In this work, I have fabricated the thinnest limit of graphite intercalation compounds (intercalated bilayer graphene) and elucidated its electronic structures by high-resolution ARPES. In Ca intercalated bilayer graphene, I clearly observe the interlayer band responsible for superconductor in bulk GICs, suggest that Ca intercalated bilayer graphene also may show the 2-dimentional superconductivity. Additionally, I find the substrate-induced charge density wave in π band on Ca intercalated bilayer graphene.

Free Research Field

光電子固体物性