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Ohya Lab
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The lab pioneers next-generation, low-power devices that use the electron's "spin."
AboutAbout the lab
Controlling spin currents to pioneer next-generation devices
Ohya Lab studies spintronics, a new kind of electronics that uses the electron's "spin."
Conventional electronics has mainly used the electron's "charge."
The lab uses spin inside materials such as semiconductors and oxides to explore new materials and physical phenomena, with the aim of realizing devices.
Because spin is sensitive to crystal quality, the lab grows high-quality crystals controlled down to the atomic level using molecular beam epitaxy equipment.
Key terms
- Spin
- A property of the electron that acts like a tiny magnet. It takes one of two states: up or down.
- Molecular beam epitaxy
- A method of growing crystals in an ultra-high vacuum by directing atoms onto a surface so that the crystal builds up one atomic layer at a time.
- Ferromagnetic semiconductor
- A material that is a semiconductor and also has magnetic properties (ferromagnetism).
NewsLab news
A master's student won the Poster Award at the 23rd Workshop on Ferroic Orders and Their Manipulation
A master's student won the 24th English Presentation Encouragement Award of the Japan Society of Applied Physics
Published a review paper on spin-dependent tunneling phenomena in semiconductors
Joint research with NTT Basic Research Laboratories and others on the magnetotransport of SrRuO3(111) thin films was published in APL Materials
A doctoral student received the Outstanding Doctoral Thesis Award from the Department of Electrical Engineering and Information Systems
ResearchResearch themes
The lab actively uses spin inside materials such as semiconductors and oxides to explore new materials and physical phenomena related to spintronics, with the aim of realizing devices that apply them. It creates high-quality interfaces and multilayer films (heterostructures) controlled at the atomic level, and studies how to control spin currents with high efficiency.
*Illustrative imageA new way to switch the direction of a magnet with an electric current
To reduce the energy needed for magnetization reversal, the lab studies a method in which spin-orbit interaction generates a spin current from an electric current, and that spin current reverses the magnetization. The lab has shown that magnetization in a ferromagnetic semiconductor can be reversed simply by passing a current through it, and that spin currents and electric currents can be converted into each other with high efficiency at oxide interfaces.
*Illustrative imageNew physics of spin in ferromagnetic semiconductors
Ferromagnetic semiconductors, which have the properties of both semiconductors and ferromagnets, show phenomena not seen in ordinary semiconductors. The lab investigates properties that are not yet understood, such as how electron waves are disturbed when the concentration of magnetic atoms is changed.
*Illustrative imageCombining spin and quantum effects
The lab uses molecular beam epitaxy to create nanostructures that are atomically flat, and studies new phenomena that appear through quantum effects when electrons are confined in a nanometer-scale space, aiming to connect them to applications.
MembersFaculty
The members of Ohya Lab include faculty, technical assistants, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorShinobu OhyaPublications ↗
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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: “Perovskite oxide thin film” Magnunor / CC BY-SA 4.0 (cropped)
- A new way to switch the direction of a magnet with an electric current: “MTJ with Transparent Background” OJB Quantum / CC BY 4.0 (cropped)
- New physics of spin in ferromagnetic semiconductors: “Molecular Spintronic Action Confirmed in Nanostructure ( )” National Institute of Standards and Technology / Public domain (cropped)
- Combining spin and quantum effects: “Co ellipse” Joseph A. Stroscio Robert J. Celotta Steven R. Blankenship Frank M. Hess / Public domain (cropped)
- Related lab (Anh Lab): “Dilution Refrigerator ( )” UCL Mathematical & Physical Sciences from London, UK / CC BY 2.0 (cropped)
- Related lab (Yokota Lab): “Strain gauge” Cristian V. / CC BY 4.0 (cropped)
- Related lab (Someya-Jimbo Lab): “Stretchable Electronics” Steve Jurvetson from Menlo Park, USA / CC BY 2.0 (cropped)
- Related lab (Tanaka-Ohya-Nakane-Le Lab): “Molecular-beam epitaxy system at LAAS 0514” Guillaume Paumier (user:guillom) / CC BY-SA 3.0 (cropped)
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