Researcher Information

YOSHIDA K. Hiroyuki

Associate Professor

Physics and Chemistry of Materials

Department of Physics, Electronic Condensed Matter Physics


1. Exploring of new material
2. Geometrical frustration
3. Development of ultra-High Tc superconductor
4. Magnetoelectric effect of multiferroic system

Representative Achievements

Magnetic Properties of the S = 1/2 Distorted Kagome Antiferromagnet CdCu3(OH)6Cl2 with Low-Symmetry Orbital Arrangement,
H. K. Yoshida, N. Noguchi, Y. Ishii, M. Oda, J. Chen, K. Yamaura, T. Kida, Y. Narumi, and M. Hagiwara,
Journal of the Physical Society of Japan, 90, 044714 (2021).
Emergence of Frustrated Short-Range Order above Long-Range Order in the S = 1/2 Kagome Antiferromagnet CaCu3(OD)6Cl2•0.6D2O,
Y. Ihara, K. Matsui, Y. Kohama, H. Kühne, and H. K. Yoshida,
Journal of the Physical Society of Japan, 90, 023703 (2021).
Field-induced successive phase transitions in the J1-J2 buckled honeycomb antiferromagnet Cs3Fe2Cl9,
Y. Ishii, Y. Narumi, Y. Matsushita, M. Oda, T. Kida, M. Hagiwara, and H. K. Yoshida,
Physical Review B, 103, 104433 (2021).
Partially Disordered State with Short-Range Spin Correlation in S = 5/2 Classical Triangular Antiferromagnet Ag2FeO2,
H. K. Yoshida, M. Matsuda, M. B. Stone, C. R. de la Cruz, T. Furubayashi, M. Onoda, E. Takayama-Muromachi, and M. Isobe,
Physical Review Research, 2, 043211 (2020).
Static and dynamic spin properties in a quantum triangular lattice antiferromagnet Ag2CoO2,
H. K. Yoshida, S. E. Dissanayake, A. D. Christianson, C. de la Cruz, Y.-Q. Cheng, S. Okamoto, K. Yamaura, M. Isobe, and M. Matsuda,
Physical Review B, 102, 024445 (2020).

Department of Physics, Electronic Condensed Matter Physics

YOSHIDA K. Hiroyuki

Associate Professor

What made you decide to become a researcher?

The advance of science and technology has been remarkable, and this enable us to live a convenient life. However, we know only a handful of the laws of nature and there is vast unknown territory which should be shed light on. I think I want to do something as a researcher that will contribute to reveal a piece of the law of nature.

Who is the researcher you respect most and why?

I respect a scientist who keep making an effort, enjoying everything in nature, and presenting interesting concepts and materials to the world.

What do you usually do when your research work gets stuck?

As the proverb says, every failure is a stepping stone to success. This means that any (good or bad) results are essentially important to achieve the research goal, so I think research works do not get stuck, in a sense. But, when I feel frustrated, then I usually take a coffee break.

What is your dream that you want to achieve through your research?

My research is to develop new materials. It is an incredible pleasure to succeed in finding a material which has never been found so far. To find a room temperature superconductor is the final goal of my research. I aim to grasp it first in the world. World of the room temperature superconductor – that sounds amazing.

Magnetic levitation train