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Aoki-Miyake Lab
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A condensed matter physics lab that explores new superconductivity and quantum properties in materials containing uranium and other elements.
AboutAbout the lab
Creating new materials to explore unknown quantum properties.
The Aoki-Miyake Lab studies the physics of compounds containing actinide elements such as uranium, as well as rare-earth elements.
The lab creates new materials and explores the unprecedented quantum properties that emerge in them.
In these materials, electrons interact strongly with one another, giving rise to a state known as a heavy-fermion system, in which electrons behave as if they were very heavy.
The lab handles everything in-house, from growing crystals to measurements under extreme conditions such as ultralow temperatures, high magnetic fields, and high pressure.
Key terms
- Superconductivity
- A phenomenon in which electrical resistance drops to zero when a material is cooled below a certain temperature
- Heavy-fermion system
- A state in which electrons in a material behave like particles much heavier than ordinary electrons
- Fermi surface
- A surface inside a metal that marks the boundary between occupied and unoccupied electron states. It is a key to understanding what determines a metal's properties
NewsLab news
Joint research with the Japan Atomic Energy Agency and others discovers a new electronic order in a uranium compound
A joint research group including Associate Professor Miyake verifies quantum oscillations in a Kondo insulator through ultrasonic experiments
Joint research with Kyoto University and others discovers a property unique to spin-triplet superconductors
Professor Aoki receives the Nishina Memorial Prize
Joint research makes the first observation of the piezomagnetic effect in a ferromagnet
ResearchResearch themes
Centered on f-electron compounds containing actinide and rare-earth elements, the lab develops new materials and explores new quantum properties. As part of the physics of strongly correlated electron systems, in which electrons strongly influence one another, it studies heavy-fermion systems and the coexistence of ferromagnetism and superconductivity.
*Illustrative imageNeptunium and Plutonium Compounds
Compounds containing neptunium or plutonium are known for 'high-temperature' superconductivity and complex ordered states. NpPd5Al2, discovered by the lab, is the world's first heavy-fermion superconductor containing neptunium.
*Illustrative imageUranium Compounds with Coexisting Ferromagnetism and Superconductivity
The lab studies uranium compounds in which magnetism (ferromagnetism) and superconductivity appear at the same time, as well as multiple superconductivity, in which several different superconducting phases appear. Spin-triplet superconductivity, an unconventional type of superconductivity, is realized in these compounds.
*Illustrative imageDeveloping New Materials and Growing High-Quality Single Crystals
To explore the underlying physics, the lab places great importance on creating new materials and growing high-quality single crystals. It is one of the few research groups in the world capable of developing actinide compound materials.
*Illustrative imageMeasurements under Extreme Conditions and the Fermi Surface
The lab measures the specific heat, magnetization, electrical resistance, and other properties of the grown crystals, and investigates their properties under extreme conditions such as ultralow temperatures, high magnetic fields, and high pressure. It also studies the Fermi surface of actinide compounds.
MembersFaculty
- ProfessorDai Aoki
- Associate ProfessorAtsushi Miyake
- Assistant ProfessorYoshiya Homma
- Assistant ProfessorAi Nakamura
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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 of a magnet on a superconductor” Julien Bobroff (user:Jubobroff), Frederic Bouquet (user:Fbouquet), Jeffrey Quilliam, LPS, Orsay, France / CC BY-SA 3.0 (cropped)
- Neptunium and Plutonium Compounds: “Superconductor ring and magnet in levitation” Julien Bobroff (user:Jubobroff), Frederic Bouquet (user:Fbouquet), LPS, Orsay, France / CC BY-SA 3.0 (cropped)
- Uranium Compounds with Coexisting Ferromagnetism and Superconductivity: “Uraninite-mm15b” Robert M. Lavinsky / CC BY-SA 3.0 (cropped)
- Developing New Materials and Growing High-Quality Single Crystals: “Czochralski method crucibles” Twisp / Public domain (cropped)
- Measurements under Extreme Conditions and the Fermi Surface: “Dilution Fridge 008 16K” OJB Quantum / CC BY 4.0 (cropped)
- Related lab (Watanabe-Chida-Seki Lab): “Low Level Waste Disposal ( )-es” Nuclear Regulatory Commission from US de la traducción Pitana / CC BY-SA 4.0 (cropped)
- Related lab (Nuclear Fuel Science Lab): “Radiochemistry Laboratory ( )” IAEA Imagebank / CC BY 2.0 (cropped)
- Related lab (Kirishima Lab): “Radiochemistry work in Glovebox” Idaho National Laboratory / CC BY 2.0 (cropped)
- Related lab (Nuclear Materials Engineering Lab): “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
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