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Shimazu Lab
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The lab fabricates tiny electronic devices from superconductors and semiconductors and studies their properties.
AboutAbout the lab
Exploring quantum behavior with tiny devices
Shimazu Lab fabricates tiny electronic devices from superconductors and semiconductors and studies their properties.
The devices range from a few micrometers to a few nanometers in size, and are made using microfabrication techniques such as photolithography and electron beam lithography.
The lab examines their physical properties over a wide temperature range, from room temperature down to about 20 mK.
In graduation research, students study the condensed matter physics of materials such as semiconductors thoroughly and carry out research centered on experiments.
Key terms
- Layered semiconductor
- A semiconductor made of a few atomic layers. Examples include molybdenum disulfide, black phosphorus, and graphene
- Electron beam lithography
- A microfabrication technique that draws patterns using the electron beam of an electron microscope
- Electric-field-induced superconductor
- A material in which superconductivity appears when a strong electric field is applied to raise the carrier density
ResearchResearch themes
The lab fabricates tiny electronic devices made of superconductors and semiconductors and examines their physical properties over a wide temperature range, from room temperature to very low temperatures. Alongside exploring device fabrication techniques and the quantum-mechanical effects of mesoscopic systems, it aims to develop new devices and discover novel layered semiconductor materials.
*Illustrative imageDevice Fabrication and Measurement of Layered Semiconductors
The lab builds electronic devices from layered semiconductors only a few atomic layers thick (such as molybdenum disulfide, black phosphorus, and graphene) and studies them using electrical transport measurements, Raman spectroscopy, photoluminescence, and X-ray diffraction. These materials are attracting attention as candidate materials for next-generation semiconductor devices.
*Illustrative imageSearch for Electric-Field-Induced Superconductors
Experiments in this lab were the first to show that superconductivity appears even in polycrystalline bulk materials when a strong electric field is applied to raise the carrier density. The lab applies this method to many materials to search for new superconductors and ones with high transition temperatures.
*Illustrative imageQuantum Experiments with Josephson Junctions
Superconducting microdevices with tiny Josephson junctions work as electronic circuits that behave quantum-mechanically. Possible applications include quantum computers and artificial atoms.
MembersFaculty
The members of Shimazu Lab are faculty and staff, master's students and fourth-year undergraduates, and research students (international students).As of 2025
- Associate ProfessorYoshihiro Shimazu
VoicesStudent voices
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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: “Josephson junction real” No machine-readable author provided. Pasquale.Carelli assumed (based on copyright claims). / Public domain (cropped)
- Device Fabrication and Measurement of Layered Semiconductors: “2D device” Chem171group9 / CC BY-SA 4.0 (cropped)
- Search for Electric-Field-Induced Superconductors: “Electric double-layer capacitor (2 models) -1 NT” Tosaka / CC BY 3.0 (cropped)
- Quantum Experiments with Josephson Junctions: “Cross-Shaped Transmon with 2 Josephson Junctions” OJB Quantum / CC BY 4.0 (cropped)
- Related lab (Edge AI Lab (Naoki Kuzuya)): “Single-board computer Rascal 1.3 - (1)” Brandon Stafford from Somerville, Massachusetts, USA / CC BY-SA 2.0 (cropped)
- Related lab (Uehara Lab): “Superconductors” Ainur physicist / CC BY 4.0 (cropped)
- Related lab (Sekiya Lab): “Oxid titaničitý” Ondřej Mangl / Public domain (cropped)
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