Plumbene -synthesis and functional development-

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04879
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 29020:Thin film/surface and interfacial physical properties-related
• Research Institution: Nagoya University
• Principal Investigator: Yuhara Junji 名古屋大学, 工学研究科, 准教授 (10273294)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 14 族ポストグラフェン / 二次元物質 / 蜂の巣構造 / プランベン

Outline of Final Research Achievements

We investigated the electronic state at the edge of plumbene and the presence of superconductivity. The sample was prepared using a Pd(111) single crystal for a honeycomb nanosheet (plumbene) made of lead by segregation growth. Observations and measurements were conducted using a low-temperature scanning tunneling microscope and spectroscopy across the step edges. A characteristic peak was observed near the edge. As the measurement position moved away from the edge, the peak decreased in size, concluding that this peak represents an edge-specific electronic state. To clarify the presence of superconductivity, we narrowed the range of the energy measured and performed STS (Scanning Tunneling Spectroscopy) spectrum measurements. The possibility of a superconducting gap beginning to form was suggested.

Free Research Field

表面科学

Academic Significance and Societal Importance of the Research Achievements

本研究では、プランベンのエッジが特異な電子構造を有することや超伝導の可能性が示唆された。プランベンが次世代エレクトロニクスの新素材として、新たな価値が創造され、バルクとは異なる物性を有する二次元物質がさらに注目を浴び、未知なる二次元物質の創製研究へとつながることが期待される。