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Strongly Correlated Systems Theory Lab
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A lab that theoretically explores superconductivity, magnetism, and topological materials in strongly correlated electron systems.
AboutAbout the lab
Theoretically unraveling novel physical phenomena.
The Strongly Correlated Systems Theory Lab conducts theoretical research in strongly correlated condensed matter physics.
Its aim is to understand the essence of the diverse quantum phenomena that emerge only when electrons, atoms, and molecules come together to form matter.
It focuses in particular on new phenomena exhibited by electrons in strongly correlated electron systems, such as superconductivity, magnetism, and topological materials.
On the lab's website, it is introduced under the name "Fujimoto Lab."
Key terms
- Strongly correlated electron system
- A system of materials in which the repulsion between electrons (Coulomb repulsion) is extremely strong and which cannot be explained by conventional band theory.
- Unconventional superconductivity
- Superconductivity that cannot be understood by conventional superconductivity theory. A paradoxical phenomenon occurs in which the stronger the Coulomb repulsion, the higher the transition temperature.
- Topological insulator
- A material that does not conduct electricity in its interior but has localized states on its surface. Its state space has a nontrivial structure like a "Möbius strip."
- Majorana particle
- A particle that is its own antiparticle. It appears on the surface of topological superconductors.
NewsLab news
Students each received the Graduate School of Engineering Science Award and the Department of Materials Engineering Science Award
A paper submitted to Physical Review B was selected as an Editors' Suggestion
ResearchResearch themes
Strongly correlated condensed matter physics is a field that seeks to understand the essence of quantum phenomena that emerge only when electrons, atoms, and molecules come together to form matter and interact with one another. The lab conducts theoretical research in this field, mainly targeting unusual phenomena exhibited by electrons in strongly correlated electron systems.
*Illustrative imageUnconventional superconductivity in strongly correlated electron systems
The lab investigates how superconductivity that conventional theory cannot explain arises in materials where repulsion between electrons is strong. For UCoGe, which can be both a magnet and a superconductor, the lab's research showed that the tendency to become magnetic (spin fluctuations) gives rise to superconductivity.
*Illustrative imageTopological insulators and superconductors
The lab theoretically studies materials whose state space has a topologically nontrivial structure, like a Möbius strip. On the surface, Dirac particles appear in topological insulators and Majorana particles appear in topological superconductors.
MembersFaculty
The members of the Strongly Correlated Systems Theory Lab consist of faculty, a visiting professor, a secretary, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorSatoshi Fujimoto
- Assistant ProfessorAtsushi Tsuruta
- Assistant ProfessorTaiki Matsushita
- Project Assistant ProfessorMakoto Shimizu
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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: “Levitation meissner” Julien Bobroff (user:Jubobroff), Frederic Bouquet (user:Fbouquet), LPS, Orsay, France / CC BY-SA 3.0 (cropped)
- Unconventional superconductivity in strongly correlated electron systems: “Magnet 4” Peter Nussbaumer / CC BY-SA 3.0 (cropped)
- Topological insulators and superconductors: “Möbius strip” David Benbennick / CC BY-SA 3.0 (cropped)
- Related lab (創発量子物質科学): “Apparatus for measuring vapor pressures - DPLA - 96907cd46db76b056b34c2cda439c64d” 作者不詳 / Public domain (cropped)
- Related lab (メタ光量子物性): “Laser LY-RGBW01 internals optical table shining PC301980” Alexey Vazhnov / CC BY-SA 4.0 (cropped)
- Related lab (強相関系
分光): “Aust.-Synchrotron,-Storage-Ring-Magnets” jjron / CC BY-SA 3.0 (cropped) - Related lab (強相関系
量子物性): “Dilution Fridge in 16K Resolution 002” OJB Quantum / CC BY 4.0 (cropped)
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