Flying strong magnetic field devices change experiments

A strong magnetic field is not a special field of studying the magnetic field itself, but a field of studying materials using a magnetic field. A magnetic field is a field created by the movement of charges. Conversely, when a magnetic field is applied, it affects the movement of charges and the spin of electrons, so it is used in various fields in physics, such as magnetism, superconductivity, and semiconductors. Another important area is measurement system such as MRI taking an image of a living body using a magnetic field.

Polarized neutrons can observe propagation mechanism of the spin current

We, Spin Condensed Matter Group, carry out research projects which focus on quantum phenomena related to electronic spins in hard condensed matter, using quantum beam techniques such as X-ray, neutron, and muon. Here we introduce the application of polarized neutron scattering technique to spintronics, which utilizes the neutrons’ spin degree of freedom.

Physics on the water, proton and hydrogen bond

We concentrate on the study of novel phenomena concerned with the water and proton in hydrogen-bonded systems. There are wide variety of chemical and biological materials constructed with hydrogen bonds in our sample storages, which are just regarded as a gift box. For instance, various types of nano-porous crystals and superprotonic conductors like M₃H(XO₄)₂, M = K⁺, Rb⁺, Cs⁺; X = S, Se) are packed in the box. Moreover, we deal with the filmy samples of collagen (protein) and chitin (polysaccharide) that are fundamental elements of bone, skin, scales, and crab shells. We would like to study the physical properties of the hydrated and protonic states in those materials, and to create new functionalities.

Novel quantum states in Fe-based ladder materials

The Macroscopic Quantum Physics Group focus on an exploratory synthesis and characterization of strongly correlated materials such as oxides, chalcogenides, and intermetallics. Particularly, we are interested in magnetic, transport, and optical properties of correlated electronic systems including quantum magnets, superconductors, and quantum Hall liquids. The ultimate goal is to discover novel macroscopic quantum properties that cannot be described in the existing frameworks.

Orbital Crossing in Noncentrosymmetric Metals

In the noncentrosymmetric metals belonging to a certain point group, the spin degeneracy recovers at the special symmetry points. Carriers can travel from an orbit of one Fermi surface to another orbit of the paired Fermi surface across the degenerate point. Recently, we observed this orbital crossing between doubly split Fermi surfaces via the de Haas-van Alphen (dHvA) effect in a noncentrosymmetric metal.