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Low Temperature Physics Lab
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The lab explores quantum phenomena arising from electron correlations and topology at extremely low temperatures.
AboutAbout the lab
Exploring new quantum states in the world of ultralow temperatures
The Low Temperature Physics Lab (Hashimoto Lab) aims to elucidate new quantum states created by electron correlations and topology.
Its main subjects include unconventional superconductivity, quantum spin liquids, and topological materials.
Building on cryogenic techniques, the lab combines precision measurements of material properties, original measurement technologies, and devices made by microfabrication.
Newly established in December 2025, the lab also studies superfluid helium.
Key terms
- Topology
- The properties of a shape that do not change when it is stretched or shrunk. It is also used to classify the electronic states of materials.
- Quantum spin liquid
- A state in which spins do not align even at low temperatures and quantum fluctuations persist.
- Superfluidity
- A phenomenon in which liquid helium and similar substances at extremely low temperatures flow without viscosity.
NewsLab news
Results of a collaboration with a group at Peking University and others were published in Sci. China-Phys. Mech. Astron.
Results of a collaboration with a group at the University of Tokyo and others were published in JPSJ
Results of a collaboration with a group at Nagoya University and others were published in Communication Materials
Hashimoto Lab launched in the Graduate School of Science
ResearchResearch themes
The lab aims to elucidate nontrivial quantum phenomena that emerge from the interplay of electron correlations and topology. Building on cryogenic technology, it combines bulk property measurements under high magnetic fields and ultrahigh pressure, original measurement techniques, and microfabrication and device technology.
*Illustrative imagePrecision Measurement of Low-Energy Excitations
To learn the origins of superconductors and quantum spin liquids, the lab investigates the nature of low-energy excitations through precise measurements of specific heat, thermal conductivity, magnetic penetration depth, and more. Its work so far includes determining the structure of the superconducting gap in unconventional superconductors.
*Illustrative imageOriginal Advanced Measurement Technologies
The lab develops original measurement technologies, such as a scanning SQUID microscope that visualizes the tiny magnetization response of quantum materials with high spatial resolution, and a microwave resonator that generates circularly polarized waves to study chiral superconductors and altermagnets.
*Illustrative imageDevices Made by Microfabrication
Using microfabrication, the lab turns quantum materials into devices and examines their properties precisely. Through the generation, propagation, and detection of spin currents, typified by the spin Seebeck effect, it clarifies spin transport phenomena specific to quantum materials.
*Illustrative imageFundamental Physics with Helium
In helium-3 and helium-4, the quantum statistics of the atoms themselves, rather than of electrons, determine the properties. The lab studies phenomena described by macroscopic wave functions, such as superfluidity in liquids and nuclear magnetic order in solids.
MembersFaculty
The members of the Low Temperature Physics Lab consist of faculty, doctoral and master's students, and fourth-year undergraduate students.As of 2026
- ProfessorKenichiro Hashimoto
- Associate ProfessorAkira Matsubara
- Assistant ProfessorKumpei Imamura
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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: “SCORPIO Cryostat ( -CC)” NOIRLab/SwRI / CC BY 4.0 (cropped)
- Precision Measurement of Low-Energy Excitations: “Magnet 4” Peter Nussbaumer / CC BY-SA 3.0 (cropped)
- Original Advanced Measurement Technologies: “Dilution Fridge in English” OJB Quantum / CC BY 4.0 (cropped)
- Devices Made by Microfabrication: “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
- Fundamental Physics with Helium: “Liquid Helium Superfluid Phase” I, Alfred Leitner, took this photograph as part of my movie "Liquid Helium, Superfluid.". / Public domain (cropped)
- Related lab (Condensed Matter Physics Lab): “FQHE Hall” Jakubtr / CC BY-SA 3.0 (cropped)
- Related lab (Quantum Materials Lab): “Jeffrey Lynn team ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (Condensed Matter Theory Lab): “Ytterbium Optical Lattice Clock” KRISS, the Korean Research Institute of Standards and Science / CC BY-SA 3.0 (cropped)
- Related lab (Statistical Dynamics Lab): “Angleofrepose” Captain Sprite at English Wikipedia / CC BY-SA 2.5 (cropped)
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