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Saitoh Lab
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A lab that controls the flow of electron spin to create the principles of new electronic technologies.
AboutAbout the lab
Pioneering the quantum properties of matter through both physics and applications
Saitoh Lab studies condensed matter physics broadly, centered on spintronics, which uses the electron's "spin."
Using a wide range of experimental methods, from lasers to measurements at extremely low temperatures, together with theory, the lab investigates the physics of spin currents.
Building on the spin Seebeck effect discovered in the lab, it is also pursuing research on a new principle for generating electricity from heat.
The lab values both the beauty of physics and practical application, and in addition to creating fundamental principles, it also files patents.
Key terms
- Spintronics
- Electronic technology that uses not only the electrical property of electrons but also their "spin," the origin of magnetism
- Spin current
- A flow of electron spin orientation carried through a material, separate from the flow of electric charge (electric current)
- Spin Seebeck effect
- A phenomenon in which applying a temperature difference to a material generates a spin current from the heat flow
NewsLab news
View More ↗ResearchResearch themes
The lab works to open up the frontier of the quantum properties of matter, spanning both physics and applied physics, and to create the physical principles that will form the basis of next-generation electronic technologies. Centered on the physics of spin currents, it investigates materials by a variety of means, including measurements at extremely low temperatures and in ultrastrong magnetic fields, and ultrafast spectroscopy.
*Illustrative imageSpintronics
The lab conducts fundamental research on spintronics, centered on the physics of spin currents. It also explores new materials such as superconductors and topological materials, and develops new experimental techniques such as ultrafast laser spectroscopy.
*Illustrative imageQuantum Electronic Properties
Using spintronics techniques developed in the lab, it conducts fundamental research on the quantum electronic properties of matter. It investigates a wide range of materials, including superconductors and semiconductors, through measurements at extremely low temperatures and in ultrastrong magnetic fields, ultrafast spectroscopy, and more.
*Illustrative imageEnergy Conversion Using Spin
The spin Seebeck effect, discovered in the lab, is a new principle of thermoelectric power generation in which a heat flow generates a spin current that is then converted into voltage. The lab also studies using spin currents to generate electricity from light, sound, and vibration.
*Illustrative imageQuantum Physics and Machine Learning
The lab works on new principles for artificial intelligence based on quantum physics and information physics, and on pioneering new condensed matter physics using deep learning. It also develops quantum information technologies based on spintronics.
MembersFaculty
Saitoh Lab members consist of faculty, researchers, special research fellows, secretaries, and doctoral, master's, and undergraduate students.As of 2025
- ProfessorEiji SaitohPublications ↗
- Assistant ProfessorTomosato HiokiPublications ↗
- Assistant ProfessorHiroki ArisawaPublications ↗
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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: “Wiki-YIG” Krizu / CC BY-SA 3.0 (cropped)
- Spintronics: “Magnetic domain by Zureks” Zureks, Chris Vardon / CC BY-SA 3.0 (cropped)
- Quantum Electronic Properties: “FZU cryostat PJachimova 10” Akademie věd České republiky / Czech Academy of Sciences (Pavlína Jáchimová) / CC BY-SA 3.0 (cropped)
- Energy Conversion Using Spin: “SiGe Thermocouple Function” Parker Beatty / CC BY-SA 4.0 (cropped)
- Quantum Physics and Machine Learning: “Artificial Neural Network with Chip” mikemacmarketing / photo on flickr / CC BY 2.0 (cropped)
- Related lab (Kofu Lab (KOFU Group)): “J-PARC Materials and Life Science Experimental Facility Experimental Hall No. 1 Neutron Instruments” Kestrel / CC BY-SA 4.0 (cropped)
- Related lab (Nakajima Lab): “J-PARC Materials and Life Science Experimental Facility Experimental Hall No. 1 Neutron Instruments” Kestrel / CC BY-SA 4.0 (cropped)
- Related lab (Kimura Lab): “Ilmenite-155036” Robert M. Lavinsky / CC BY-SA 3.0 (cropped)
- Related lab (Tokura Lab): “Perovskite” Cadmium at English Wikipedia / Public domain (cropped)
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