The University of TokyoDepartment of Advanced Materials Science, Graduate School of Frontier Sciences,The University of Tokyo
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Group of Solid State Physics (The Institute for Solid State Physics)
Quest for the ground state of condensed matter in extreme environments
Ishimoto group
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TEL&FAX: +81-(0)4-7136-3350
e-mail: ishimoto@issp.u-tokyo.ac.jp
   Temperature (T), magnetic field (H) and pressure (P) are the most basic parameters which determine the state of condensed matter. In particular, our facilities cover temperatures all the way down to micro Kelvin which is produced with a nuclear demagnetization refrigerator. Quest for novel quantum phenomena is carried out in such a low temperature region, combined with high magnetic field (< 20 T) produced by a superconducting magnet and also high pressure. The main activities are on quantum liquid and solid phases. Among them, we focus on 3He, an extremely clean Fermion system, whose inter-particle interaction and dimensionality are easily controllable. Therefore 3He is useful for the experimental verification of basic concepts in condensed matter physics. The interesting properties, for example P-wave superfluidity in the liquid and unique magnetic order in the solid, are investigated in the same sample just by changing the pressure and temperature with various sensitive and low heat dissipation techniques, such as NMR, SQUID, torsional oscillator, vibrating wire, etc.

   Research subjects :

  1. Magnetism and superfluidity in low dimensional 3He
  2. Highly polarized superfluid 3He
  3. Heavy charged particles in neutral Fermi liquids under high magnetic fields
  4. Quantum tunneling of magnetization in a molecular magnet
  5. Enhanced nuclear magnetism and superconductivity in intermetallic compounds