Graduate School of Science
Hokkaido University

International Course in Graduate School of Science

Condensed Matter Physics

Condensed Matter Physics

In the Department of Condensed Matter Physics, our staff members conduct cutting-edge research on the physical properties of materials and provide quality physics education. Our department branches into the fields of “theoretical physics” (2 laboratories), “experimental physics” (7 laboratories), “advanced functional materials and physics” (4 laboratories), and “material science” (2 laboratories). Research in the department covers a wide range of areas, including complex liquids, semi-conductors, high-Tc superconductors, organic molecular crystals and organic polymers, nano-materials, multiferroic materials, complex networks, electron correlations in quantum materials, thermaly-, pressure-, and photo-induced phase transitions, glass transitions, magnetism, spin electronics, nonlinear optics and photovoltaic devices as well as many other topics. These studies not only provide us with a greater understanding of natural phenomena but can also lead to a discovery of novel functional materials. Condensed matter physics is thus one of the most important research fields for the progress in science and technology in our society.

Part of our department belongs to the cooperative graduate school with “National Institute for Materials Science (NIMS)” and “RIKEN”, which are the leading research institutions in Japan. The laboratories in the field of “advanced functional materials and physics” and those in the field of “material science” are operated by researchers from NIMS and RIKEN, respectively. These laboratories accept doctoral students from our department. The students can study physics and take part in research projects within the excellent environment at NIMS and RIKEN. Our department is further participating in an interdisciplinary education and research program provided by the “Center of Education & Research for Topological Science & Technology”. This program covers the fields of mathematics, condensed matter physics, astrophysics, material science, life science, information engineering and economics. Graduate students as well as young researchers from our department will find an opportunity to interact with the different fields and gain a new insight into their own projects.

Based on this closer connection among the various fields, we aim to cross-fertilize research and education, and foster world-class human resources with creative talent. Students can expand their knowledge of modern physics through the curriculum and can improve their logical thinking skills and capabilities for problem-finding and problem-solving through their research activities. Our graduates will open up a new frontier in natural science and will be bearers of the future of science and technology.

Research Fields

Theoretical Physics

Statistical Physics
Keywords: Statistical physics, non-equilibrium, non-linearity, random systems, complex networks, phase transition, self-organization, critical phenomena, scale-free structures, numerical simulation, Superconductivity, superfluidity, Bose-Einstein condensation, Condensed matter physics, magnetism, multiferroics, heavy fermion
Mathematical Physics
Keywords: Transition-metal complexes, organic polymers, single-molecule nanomagnets, photoinduced phase transition, optically switchable magnetism, nuclear magnetic relaxation

Experimental Physics

Electronic Properties of Solids
Keywords: high-temperature cuprate superconductors, frustrated spin systems, surface & nano-structure magnetism, material research, scanning tunneling microscopy/spectroscopy (STM/STS),  spin-polarized STM
Electronic Properties of Low-dimensional Conductors
Keywords: Low-dimensional organic conductors, scanning tunneling microscopy (STM), scanning tunneling spectroscopy (STS), nonlinear conductivity, symmetry of Cooper pairs, spin density waves (SDWs), chiral superconductivity, mesoscopic systems
  • Kazushige Nomura
    Kazushige Nomura

    Specially appointed Professor

    PhD

    Fields of Specialty:Condensed Matter Physics

    Mechanism of organic superconductors by Scanning Tunneling Spectroscopy (STS), STM/STS on a monolayer and nanotubes, Spin density wave dynamics, Topological quantum phenomena in chiral superconductors

  • Noriaki Matsunaga
    Noriaki Matsunaga

    Associate Professor

    PhD

    Fields of Specialty:Condensed Matter Physics

    Mechanism of organic superconductors by Scanning Tunneling Spectroscopy (STS), STM/STS on a monolayer and nanotubes, Spin density wave dynamics, Topological quantum phenomena in chiral superconductors

  • Hiroyoshi Nobukane
    Hiroyoshi Nobukane

    Assistant Professor

    PhD

    Fields of Specialty:Condensed Matter Physics

    Mechanism of organic superconductors by Scanning Tunneling Spectroscopy (STS), STM/STS on a monolayer and nanotubes, Spin density wave dynamics, Topological quantum phenomena in chiral superconductors

J-Material: Physics of Strongly Correlated Systems
Keywords: J-material, superconductivity, magnetism, heavy fermion, quantum phase transition, magnetoelectric effects, very low temperatures, high magnetic fields, high pressure, ultrasonic measurements, muSR, neutron scattering, RXS, ferroelectrics, multiferroics, electronic ferroelectricity, phase transition, photoinduced cooperative phenomena
Low Temperature Physics
Keywords: NMR, strongly-correlated electrom systems, superconductivity, magnetism
  • Atsushi Kawamoto
    Atsushi Kawamoto

    Professor

    PhD

    Fields of Specialty:Physics in strongly correlated electrons system

    Experimental study on strongly correlated electrons system using nuclear magnetic resonance spectroscopy.

  • Yoshihiko Ihara
    Yoshihiko Ihara

    Lecture

    PhD

    Fields of Specialty:Physics in strongly correlated electrons system

    Experimental study on strongly correlated electrons system using nuclear magnetic resonance spectroscopy.

  • Shuhei Fukuoka
    Shuhei Fukuoka

    Assistant Professor

    PhD

    Fields of Specialty:Physics in strongly correlated electrons system

    Experimental study on strongly correlated electrons system using nuclear magnetic resonance spectroscopy.

Condensed Matter Dynamics
Keywords: microscopic dynamics of condensed matters, dielectric and optical spectroscopy from 1microHz to 10 PHz, Raman scattering, femtosecond pump-probe spectroscopy, terahertz time-domain spectroscopy, solids, complex liquids, hydrogen-bonding systems, semiconductors, nonlinear optical phenomena, biological materials
  • Ryusuke Nozaki
    Ryusuke Nozaki

    Associate Professor

    PhD

    Fields of Specialty:Physics of complex liquids

    Microscopic approach to reveal the mechanism of glass transition, Molecular dynamics of hydrogen-bonding liquids, Development of new experimental techniques for dielectric spectroscopy

  • Tomobumi Mishina
    Tomobumi Mishina

    Associate Professor

    PhD

    Fields of Specialty:Laser Spectroscopy

    Research of hydrogen-bonding liquid by terahertz time-domain spectroscopy, Research of electron lattice interaction by coherent phonon, Research of carrier dynamics in semiconductor

  • Sekika Yamamoto
    Sekika Yamamoto

    Assistant Professor

    PhD

    Fields of Specialty:Laser Spectroscopy

    Research of hydrogen-bonding liquid by terahertz time-domain spectroscopy, Research of electron lattice interaction by coherent phonon, Research of carrier dynamics in semiconductor

Nanostructure Physics
Keywords: Nano-structured devices, new photovoltaic devices, next-generation solar cells, clean unit system platforms, Qunatum field theory, many-body perturbation theory, spintronics devices, magnetism, electronic correlations, Dirac electron, topological insulator
  • Akira Ishibashi
    Akira Ishibashi

    Professor

    PhD

    Fields of Specialty:Nanostructure physics and device application

    Quantum cross device, Photovoltaic devices, Multi-striped Orthogonal Photon-Photocarrier Propagation Solar Cells, Density functional theory, Electronic correlations, Highly Clean Environment, Clean Unit System Platform (CUSP)

  • Kenji Kondo
    Kenji Kondo

    Associate Professor

    PhD

    Fields of Specialty:Condensed matter theory

    Qunatum field theory, many-body perturbation theory, spintronics devices, magnetism, electronic correlations, Dirac electron, topological insulator

Phase Transition
Keywords: Time domain light scattering, Ferroelectrics, Quantum ferroelectrics, Glass transition, Frequency domain light scattering, Complex liquids, Relaxor ferroelectrics
  • Yuhji Tsujimi
    Yuhji Tsujimi

    Associate Professor

    PhD

    Fields of Specialty:Phase transitions of electronic materials

    Photo Erasable Memory Phenomenon in Bi4-xLaxTi3O12, Space and time scaling in the quantum paraelectric state of SrTiO3., Antiferrodistortive soft mode in Bi4-xNdxTi3O12, Dielectric-Loss Minimum in the supercooled liquids.

Advanced Functional Materials and Physics (Cooperative Graduate School with NIMS)

Advanced NMR
Keywords: Solid-state-NMR, Highly magnetic fields, Condensed matter physics, Advanced NMR techniques
Condensed Matter Theory
Keywords: Quantum many-body theory, superconductivity, magnetism, critical phenomena, electronic nematic liquids
Nanosystem Photonics
Keywords: Surface physics, nanophotonics, energy conversion, nanomaterials
  • Tadaaki Nagao
    Tadaaki Nagao

    Professor

    PhD

    Fields of Specialty:Solid State Physics

    Surface physics, nanophotonics, energy conversion, nanomaterials

Solid State Physics in High Magnetic Field
Keywords: Spectroscopy, High magnetic field, Terahertz wave, Quantum Hall effect, Dirac Fermion, Topological insulator
  • Yasutaka Imanaka
    Yasutaka Imanaka

    Professor

    PhD

    Fields of Specialty:Solid State Physics

    Spectroscopy, High magnetic field, Terahertz wave, Quantum Hall effect, Dirac Fermion, Topological insulator

Material Science (Cooperative Graduate School with RIKEN)

Muon Spin Resonance
Keywords: µSR material science at the RIKEN-RAL Muon Facility in the UK. Experimental and theoretical studies on the magnestism, superconductivity, industiral applications, non-distructive element analysis, muon hyperfine interactions in metals, insuators and organic molecules. Muon site and magnetic spin structural analysis by the density functional theory
  • Isao Watanabe
    Isao Watanabe

    Professor

    PhD

    Fields of Specialty:Solid State Physics

    Experimental and theoretical studies on the magnestism, superconductivity, industiral applications, non-distructive element analysis, muon hyperfine interactions in metals, insuators and organic molecules. Muon site and magnetic spin structural analysis by the density functional theory

Electron Spin Resonance
Keywords: Electron Spin Resonance (ESR) from X-band to millimeter and sub-millimeter waves, High magnetic field, Strongly-correlated materials, Molecular magnets, Molecular conductors, Spin-Liquid system, Nano-carbon materials.