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Arita Lab
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A theory lab that predicts and designs the properties of new materials through computation.
AboutAbout the lab
Designing new materials through computation
The Arita Lab studies condensed matter physics using first-principles methods.
The lab not only explains and reproduces experimental findings, but also aims to design new functional materials such as superconductors and thermoelectric materials.
For analysis, the lab uses calculations based on density functional theory, as well as approaches that combine it with model calculations, choosing between them as the situation requires.
The lab also develops new computational methods that enable highly accurate materials design.
Key terms
- First-principles calculation
- A calculation that obtains the properties of a material from only the fundamental laws of quantum mechanics, without fitting to experimental values
- Density functional theory
- A leading theory of first-principles calculation that obtains the energy of a material from the distribution of its electrons
- Superconductivity
- A phenomenon in which electrical resistance drops to zero when a material is cooled below a certain temperature
ResearchResearch themes
The lab studies condensed matter physics using ab initio methods. Based on insights gained from calculations on a wide variety of materials, it aims to theoretically predict and design unusual physical properties that originate from nontrivial electronic states.
*Illustrative imagePredicting Crystal Structures at Finite Temperature
By incorporating the contribution of lattice vibrations to the free energy, the lab developed a first-principles framework that optimizes crystal structures at finite temperature. It has applied this framework to bilayer nickelates and is determining their pressure-temperature phase diagram.
*Illustrative imageElectronic States Reshaped by Ferromagnetic Fluctuations
Using a Hubbard model that includes only local Coulomb repulsion, the lab examined how ferromagnetic fluctuations affect the properties of electrons. It showed that even without magnetic order, a broadening of the Fermi surface resembling exchange splitting can appear.
*Illustrative imageProbing Multipolar Order with Raman Scattering
Multipolar orders such as octupole order are hard to detect because they do not couple directly to external fields. The lab proposed that Raman scattering with circularly polarized light can serve as a way to probe their anisotropy.
*Illustrative imageQuantum Computation with Built-in Symmetry
The lab presented a method for rigorously incorporating space group symmetry when handling many-body wave functions on a quantum computer. Testing it on a ladder-type Hubbard model, it confirmed that the way the calculation is represented improves the convergence of the energy.
MembersFaculty
The members of the Arita Lab consist of faculty, project researchers, doctoral and master's students, and secretaries at the University of Tokyo, along with researchers and secretaries at RIKEN.As of 2026
- ProfessorRyotaro AritaPublications ↗
- Assistant ProfessorTaisei KitamuraPublications ↗
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RelatedLabs similar to Arita Lab
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Nakatsuji-Sakai LabFaculty of Science, Department of PhysicsTopological condensed matter physics, superconductivity, spi…The information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
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: “Magnetic levitation of a superconductor” Your stepbro sunset / CC BY 4.0 (cropped)
- Predicting Crystal Structures at Finite Temperature: “Cobaltate cristallographic structure” Julien Bobroff (user:Jubobroff) LPS, Orsay, France / CC BY-SA 3.0 (cropped)
- Electronic States Reshaped by Ferromagnetic Fluctuations: “Bulk Ag, Fermi surface” Alberto Marmodoro / CC BY-SA 3.0 (cropped)
- Probing Multipolar Order with Raman Scattering: “CuO2-plane in high Tc superconductor” Pieter Kuiper / Public domain (cropped)
- Quantum Computation with Built-in Symmetry: “Atomic nucleus simulated on a quantum computer” OLCF / CC BY 2.0 (cropped)
- Related lab (Kobayashi Lab): “Irradiated spot of diamond with high concentration of nitrogen-vacancy centers” Lillian B. Hughes ほか
/ CC BY 4.0 (cropped) - Related lab (Hayashi Lab): “Optical elements and green laser beem” Dasha Butova / CC BY-SA 4.0 (cropped)
- Related lab (Katsura Lab): “Icosahedrite Diffraction Pattern” Paul Steinhardt / CC BY-SA 4.0 (cropped)
- Related lab (Nakatsuji-Sakai Lab): “FZU AV CR Silicon Single Crystal C” Mojmir Churavy / CC BY-SA 4.0 (cropped)
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