CVClient

MITO TAKESHI

  (水戸 毅)

Profile Information

Affiliation
Professor, Graduate School of ScienceDivision of Physics, University of Hyogo
Degree
博士(理学)(大阪大学)

J-GLOBAL ID
200901075980376352
researchmap Member ID
5000039714

Awards

 2

Papers

 176
  • Yusuke Nakai, Takuto Fujii, Yu Yamane, Hijiri Mizutani, Akira Yamaguchi, Akihiko Sumiyama, Takeshi Mito
    Interactions, 245(1) 45-1-45-8, Mar 20, 2024  Peer-reviewed
  • Shota Nakanishi, Yusuke Nakai, Yosuke Goto, Yoshikazu Mizuguchi, Takuto Fujii, Takeshi Mito
    Journal of the Physical Society of Japan, 93(2) 023703-1-023703-4, Feb 15, 2024  Peer-reviewed
    We present the results of nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements on the layered tin pnictide superconductors NaSn2As2 (the superconducting transition temperature Tc = 1.3 K) and Na1−xSn2P2 (Tc = 2.0 K). In NaSn2As2, a broad 75As NQR spectrum indicates a large charge distribution at the As site, and a broad 119Sn NMR spectrum indicates a distributed local density of states (DOS) at the Sn site. Almost the same level of microscopic disorder in the electronic state is also found at the Sn site in Na1−xSn2P2 as well. These results clearly indicate the presence of a local atomic disorder in these superconductors. We have also measured the nuclear spin–lattice relaxation rate 1=T1 to gain insight into the partial DOS at each site. Our NMR=NQR results are consistent with previous band calculations, indicating that Na deficiency results in an increase in the DOS at the Fermi energy (EF) due to the decrease in EF. The agreement between the experimental and band calculation results makes it more plausible that the increase in the Tc of Na1−xSn2P is due to the increase in the DOS at EF caused by the Na deficiency. This study thus demonstrates that NMR=NQR measurements can be a very effective tool in revealing the local electronic structure of materials by comparing experimental results with theoretical band calculations.
  • Nishikawa Tomoki, Fujii Takuto, Nakai Yusuke, Mito Takeshi, Iga Fumitoshi
    Interactions, 245(1) 17-1-17-7, Feb 2, 2024  Peer-reviewed
  • Shogo Yoshida, Hajime Ueda, Tetsuya Mutou, Shun Katakami, Masato Okada, Yuichi Yokoyama, Masaichiro Mizumaki, Naoka Hiraoka, Kentaro Kitagawa, Yoshinori Haga, Takuto Fujii, Yusuke Nakai, Takeshi Mito
    Journal of the Physical Society of Japan, 93(1) 013702-1-013702-5, Jan 15, 2024  Peer-reviewed
  • H. Ueda, S. Katakami, M. Okada, S. Yoshida, Y. Nakai, T. Mito, M. Mizumaki
    Journal of Magnetic Resonance, 357 107585-1-107585-9, Dec, 2023  Peer-reviewed

Misc.

 222

Presentations

 52

Research Projects

 13