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Functional Properties of Thin-Film Interfaces Lab
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The lab explores new quantum properties using high-quality thin films of oxides and halides.
AboutAbout the lab
Exploring new quantum properties and functions that emerge at thin-film interfaces
The Functional Properties of Thin-Film Interfaces Lab fabricates high-quality thin films and heterostructures from oxide and halide materials, and studies the new properties and functions that emerge at thin-film interfaces.
The lab grows its thin films by molecular beam epitaxy and pulsed laser deposition.
It focuses on quantum properties involving the topology of electronic structure, quantum geometry, and interactions between electrons (electron correlation), with an eye on everything from understanding fundamental physics to future device functions.
Key terms
- Molecular beam epitaxy
- A method of making thin crystalline films by evaporating source materials in a vacuum and stacking atoms layer by layer on a substrate. Also called MBE.
- Heterostructure
- A structure in which different materials are stacked as thin layers. Properties different from those of the individual materials can appear at the interfaces between the layers.
- Strongly correlated electron system
- A material in which interactions between electrons are strong. Ordering of charge, spin, and orbitals gives rise to diverse electronic phases.
- Shift current
- A photocurrent driven by the quantum-geometric phase of electron wavefunctions. It is a main origin of the bulk photovoltaic effect.
NewsLab news
View More ↗ResearchResearch themes
The Functional Properties of Thin-Film Interfaces Lab uses molecular beam epitaxy and pulsed laser deposition to fabricate high-quality thin films and heterostructures of oxide and halide quantum materials, and explores the new properties and functions that emerge at thin-film interfaces. Focusing on quantum properties involving the topology of electronic structure, quantum geometry, and electron correlation, the lab carries out research that spans from understanding fundamental physics to future device functions.
*Illustrative imagePhotovoltaic Effects Driven by Quantum Geometry
In materials that lack spatial inversion symmetry, a photovoltaic current arises without a p-n junction. The lab develops materials that generate shift current with high efficiency, and works to improve performance and clarify the physical mechanism using high-quality thin films and heterostructures.
*Illustrative imageQuantum Properties of Halide Perovskite Thin Films
The lab grows high-quality thin films of halide perovskites, which are attracting attention as next-generation solar cell materials, by MBE. It aims to clarify the true origin of their high solar cell efficiency and to create new quantum properties based on their unusual electronic structure.
*Illustrative imageNew Properties of Halide Heterostructures
Halide compounds show diverse properties, but thin-film growth techniques for them remain immature, and research on their interfaces has been limited. The lab has established its own MBE growth technique for halides and explores the quantum properties and functions of atomically controlled interfaces.
*Illustrative imageNew Electronic Phases in Strongly Correlated Electron Systems
In strongly correlated electron systems such as transition metal oxides, ordering of charge, spin, and orbitals gives rise to diverse electronic phases. By joining different electronic phases in thin-film heterostructures, the lab aims to realize new electronic phases at interfaces and to control phases with electric fields and light.
MembersFaculty
The members of the Functional Properties of Thin-Film Interfaces Lab consist of faculty, master's and undergraduate students (including exchange students), and administrative assistants.As of 2026
- ProfessorMasao Nakamura
- Assistant ProfessorTakuya Takashiro
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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: “Molecular Beam Epitaxy” Nikhil P / CC BY-SA 3.0 (cropped)
- Photovoltaic Effects Driven by Quantum Geometry: “Solar Panel Array - panoramio” Kiwibirdman / CC BY 3.0 (cropped)
- Quantum Properties of Halide Perovskite Thin Films: “Perovskite solar cell” Dennis Schroeder / National Renewable Energy Laboratory / Public domain (cropped)
- New Properties of Halide Heterostructures: “Pulsed Laser Deposition in Action” Adam Andersen Læssøe / CC BY-SA 4.0 (cropped)
- New Electronic Phases in Strongly Correlated Electron Systems: “Mushistonite (Morgenstern-Badarau 1976) centered on the three space diagonals” Ra'ike (Wikipedia) / CC0 (cropped)
- Related lab (Surface Structure and Physical Properties Lab): “Sugar crystals” Masha Milshina / CC BY 4.0 (cropped)
- Related lab (Spin Quantum Properties Lab): “Interior of the Plum Brook Reactor Facility (GRC-1961-C-55851)” NASA Glenn Research Center / Public domain (cropped)
- Related lab (Macroscopic Quantum Properties Lab): “Levitating superconductor” Julian Litzel (Jullit31) / CC BY-SA 3.0 (cropped)
- Related lab (Theoretical Particle Physics and Cosmology Lab): “Kedr-detector-inp-0811” Вадим Махоров / CC BY 4.0 (cropped)
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