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Materials Physics in Extreme Environments

Materials Physics in Extreme Environments

 

The properties of material under extreme conditions, such as under high pressure and high magnetic field, exhibit unconventional and anomalous characteristics. Our research group is dedicated to investigating the unexplored states of matter under these extreme conditions. In order to accomplish this objective, we are actively developing the advanced experimental techniques. We are seeking the original research using the advanced experiment techniques.

 
  • Prof. KOBAYASHI Tatsuo
  • E-mail: kobayashi@science.(okayama-u.ac.jp)
  • solid state physics/magnetism/superconductivity

Directory of Researchers 
 
  • Assoc. Prof. ARAKI Shingo
  • E-mail: araki@science.(okayama-u.ac.jp)
  • solid state physics/magnetism/superconductivity

Directory of Researchers 
 
  • Assit. Prof. AKIBA Kazuto
  • E-mail: akb＠(okayama-u.ac.jp)
  • solid state physics/magnetism/superconductivity

Directory of Researchers 

 

α-Mn is knows as antiferromagnetic metal, which has 58 Mn atoms in the unit cell. The antiferromagnetic ordering temperature decreases with increasing pressure and the pressure-induced ordered phase appears above 1.4 GPa. Through the utilization of high-quality single crystals, we have discovered the anomalous Hall effect and tiny spontaneous magnetization, 0.02μB/Mn, in the pressure-induced ordered phase. These findings indicate that α-Mn is a good material to study the anomalous Hall effect originated from the Berry curvature. (Akiba, Araki, Kobayashi)