Institute of Multidisciplinary Research for Advanced Materials, Tohoku University


LAST UPDATE 2021/05/02

  • 研究者氏名
    Researcher Name

    佐藤卓 Taku J SATO
    教授 Professor
  • 所属
    Professional Affiliation

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

    無機材料研究部門 スピン量子物性研究分野
    Division of Inorganic Material Research, Quantum Spin Physics
  • 研究キーワード
    Research Keywords

    Neutron scattering
    Quantum magnets
    Itinerant electron magnetism
    Unconventional superconductivity
Research Subject
Neutron scattering research on the spin dynamics in condensed matters

研究の背景 Background


Interesting macroscopic phenomena in condensed matters are attributed to spin degree of freedom of many-body correlated electrons. Those phenomena are of significant importance not only from the fundamental physics viewpoint, but also for the future device applications, such as magnetism and superconductivity. The neutron scattering is the powerful tool to directly investigate the spin arrangement and dynamics in condensed matters. We use neutron scattering as a primary tool to investigate low-temperature quantum phenomena of condensed matters.

研究の目標 Outcome


We are aiming at 1) finding the novel macroscopic quantum state in the frustrated quantum magnets, represented by the s=1/2 quantum kagome-lattice antiferromagnets, 2) understanding the pairing mechanism of the iron-based hightemperature superconductors, and 3) exploring the spin arrangement and slow dynamics of topological spin texture in the chiral magnets.

研究図Research Figure

Fig.1. (a) Crystal structure of the Rb2Cu3SnF12 quantum kagome latteice antiferromagnet. (b) Distorted kagome lattice structure of Cu [1]. Fig.2. Spin excitations in the Rb2Cu3SnF12. Triplet excitations from the singlet valence bond solid state was observed [1] Fig.3. Strongly quantum renormalized dispersion relation of the spin excitations in the Cs2Cu3SnF12 [2].

文献 / Publications

[1] Nature Phys., 12, 865 (2010); [2] J. Phys. Soc. Jpn., 83, 043701 (2014).