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Mizokawa Lab
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The lab looks at electrons in solids with light to uncover the origin of their physical properties.
AboutAbout the lab
Seeing electrons in solids with light.
The Mizokawa Lab investigates the states of electrons that underlie the electrical, magnetic, and optical properties that various solids exhibit.
It uses spectroscopic experimental techniques that employ relatively high-energy light, from ultraviolet to X-rays.
When light is shone on a solid in a vacuum, electrons are ejected; by measuring their energy and momentum, one can determine the energy and momentum of the electrons inside the solid.
The main subjects are transition-metal compounds and rare-earth compounds that show properties such as magnetism, superconductivity, and metal-insulator transitions.
Key terms
- Photoelectron spectroscopy
- A method of investigating the states of electrons inside a solid by shining light on it and measuring the electrons that are ejected.
- Synchrotron radiation
- Bright light with a selectable wavelength that is emitted when electrons are bent in an accelerator. It is used in X-ray experiments.
- Metal-insulator transition
- A phenomenon in which a material switches between electrically conducting and non-conducting states when temperature or composition is changed.
NewsLab news
Paper on photoelectron spectroscopy of layered V chalcogenides published in Phys. Rev. B
Paper on the electronic structure of rock-salt-type TiO and VO published in J. Am. Chem. Soc.
Time-resolved photoelectron spectroscopy of an excitonic insulator published in Discover Physics
Paper on the electronic structure of Ta oxides published in J. Phys. Soc. Jpn.
Paper on ladder-type iron chalcogenides published in J. Phys. Soc. Jpn.
ResearchResearch themes
Using electron spectroscopy, and X-ray spectroscopy and scattering with high-brightness, wavelength-tunable synchrotron radiation, as experimental tools, the lab studies the wide variety of phenomena produced by correlated electrons at the surfaces and in the interior of solids. It considers the mechanisms behind physical properties from measurements of electronic states, aiming to connect this to improving the performance of conventional materials and developing new materials.
*Illustrative imageStrongly correlated electron systems
The main subjects are transition-metal compounds (d-electron systems) and rare-earth compounds (f-electron systems) that show interesting properties such as magnetism, superconductivity, and metal-insulator transitions. Charge, spin, and orbital degrees of freedom are intricately coupled with lattice vibrations, giving rise to diverse magnetic and electrical properties.
*Illustrative imagePhotoelectron spectroscopy
When ultraviolet light or X-rays are shone on a solid in a vacuum, electrons are ejected by the photoelectric effect. Measuring the energy and momentum of these photoelectrons reveals the density of states, band structure, and Fermi surface of the electrons. Conversely, by shining an electron beam and measuring the light that is emitted, the structure of the unoccupied states can also be investigated.
*Illustrative imageX-ray spectroscopy and scattering
When high-energy X-rays are shone on a material, core-level electrons are excited into the conduction band. Because core-level energies are specific to each element, one can select an element and investigate the states of the part not filled with electrons (the unoccupied states).
MembersFaculty
The members of the Mizokawa Lab consist of faculty, visiting researchers, and master's and undergraduate students.As of 2026
- ProfessorTakashi Mizokawa
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “ESRF img 0853” Rama / CC BY-SA 2.0 fr (cropped)
- Strongly correlated electron systems: “Zinc oxide crystal ( )” Oak Ridge National Laboratory / CC BY 2.0 (cropped)
- Photoelectron spectroscopy: “PES Hemispherical Analyzer With Electrons web 2000px” Ichwarsnur / CC BY-SA 4.0 (cropped)
- X-ray spectroscopy and scattering: “Aust.-Synchrotron-Soft-X-ray-Beamline-Experimental-Station” jjron / CC BY-SA 3.0 (cropped)
- Related lab (原山研究室): “Neighborhood of attractor of discretized Lorenz system. XYZ(9) plane” German A. Chernykh & Irina A. Chernykh / CC BY-SA 4.0 (cropped)
- Related lab (小澤研究室): “World First Hiperboloid structure named Shukhov Tower in Polibino” Arssenev / CC BY-SA 4.0 (cropped)
- Related lab (望月研究室): “Феррожидкость в магнитном поле” Gribkov / CC BY 4.0 (cropped)
- Related lab (多辺研究室): “Texture in a polarizing microscope of a B7 bent-core phase of a liquid crystal” Ingo Dierking / CC BY-SA 4.0 (cropped)
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