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2018 Fiscal Year Final Research Report

Study on a novel quantum state driven by strongly correlated effect in quasicrystals

Research Project

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Project/Area Number 15H02111
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics II
Research InstitutionNagoya University

Principal Investigator

Sato Noriaki  名古屋大学, 理学研究科, 教授 (30170773)

Research Collaborator Deguchi Kazuhiko  
Imura Keiichiro  
Ishimasa Tsutomu  
Takakura Hiroyuki  
Project Period (FY) 2015-04-01 – 2019-03-31
Keywords準結晶 / 量子臨界現象 / 近似結晶 / 重い電子系
Outline of Final Research Achievements

Quasicrystal is distinguished from a conventional, periodic crystal. Here, periodicity is a mathemtical concept and plays an important role in condensed matter physics. In this project, we have revealed a novel mechanism of the quantum critical phenomenon observed in a rare-earth-based quasicrystal. We have also succeeded in, for the first time, discovering superconductivity in quasicrystals.

Free Research Field

物性物理学

Academic Significance and Societal Importance of the Research Achievements

本研究課題は、準結晶と強相関電子系という2つの研究領域にまたがる学際領域の開拓を目指したものである。量子臨界現象の起源の解明や、準結晶で初めての超伝導の発見という成果を通して、この目標に到達したと考える。この学術的意義は大きい。さらに、準結晶超伝導の発見は、英国物理学会誌Physics Worldにおいて、「2018年10大ブレークスルー」の1つに選ばれた。これは大きな社会的意義を有するものである。

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Published: 2020-03-30  

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