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Hanasaki Lab
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The lab explores new quantum phenomena of electrons using samples and measurement instruments that its members build themselves.
AboutAbout the lab
Samples and measurement instruments, all built in-house
The Hanasaki Lab (Strongly Correlated Physical Properties Group) manipulates electron properties such as charge, spin, and orbital degrees of freedom, and experimentally explores new quantum phenomena.
Focusing on electron correlation effects, topological effects, and frustration effects, the lab covers a wide range of themes from fundamental to applied research.
Research proceeds in a cycle of making samples, measuring them, thinking, and making again, and the lab builds its own measurement instruments as well.
The lab is introduced as one where students and professors get along well, with frequent exchange with other universities, including joint research.
Key terms
- Giant magnetoresistance
- A phenomenon in which electrical resistance changes greatly when a magnetic field is applied. It is also used in computer hard disks.
- Dirac electron system
- An electron system in which the bands cross at a single point. The relation between energy and momentum is the same as that of particles obeying Dirac's theory.
- Frustration
- A state in which many configurations have the same energy, so the arrangement cannot be uniquely determined. Entropy can remain down to extremely low temperatures.
NewsLab news
A master's student won a poster award (Bronze Prize) at the 1000 Tesla Science Area Meeting
An undergraduate student won an Excellent Presentation Award at the undergraduate thesis presentation
An undergraduate student won an Excellent Presentation Award at the undergraduate thesis presentation
An undergraduate student won an Excellent Presentation Award at the undergraduate thesis presentation
ResearchResearch themes
The lab manipulates multiple degrees of freedom of electrons, such as charge, spin, and orbital, to experimentally explore new quantum phenomena. Focusing on electron correlation, topological, and frustration effects, it takes on a wide range of themes from fundamental to applied research.
Giant magnetoresistance materials
In a material based on phthalocyanine molecules, the lab discovered giant magnetoresistance for the first time in a molecular material. In a binary semimetal, it found an effect in which electrical resistance increases as much as 2,000,000-fold in a magnetic field.
*Illustrative imagePressure-enhanced thermoelectric effect
By applying external pressure to tin selenide, a thermoelectric material that converts a temperature difference directly into voltage, the lab found that thermoelectric performance (power factor) more than doubles over a wide temperature range including room temperature. It has shown that the cause is a topological change of the electronic valley states (Lifshitz transition).
*Illustrative imageUltra-high-mobility Dirac electron systems
In layered materials in which conducting layers of Dirac electron systems are stacked, the lab has succeeded in observing the half-integer quantum Hall effect. By introducing polar structures and magnetic spins into the block layers, it also studies symmetry breaking and correlation effects of Dirac electrons.
*Illustrative imageFrustration effects
In a transition metal oxide, the lab showed experimentally that the arrangement of titanium atoms is in a state resembling the arrangement of hydrogen atoms in ice. It also studies states in which the degrees of freedom of a quantum spin system remain down to extremely low temperatures.
MembersFaculty
The Hanasaki Lab's members consist of faculty, a visiting professor, secretaries, and master's and undergraduate students.As of 2026
- ProfessorNoriaki Hanasaki
- Associate ProfessorKentaro Kentaro
- Assistant ProfessorHiroshi Murakawa
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: “Phthalocyanine-3D-balls” Jynto (talk) / CC0 (cropped)
- Pressure-enhanced thermoelectric effect: “MAXIMATOR-High-Pressure-Manometer-01a” CEphoto, Uwe Aranas / CC BY-SA 3.0 (cropped)
- Ultra-high-mobility Dirac electron systems: “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
- Frustration effects: “Fragment of pyrochlore lattice in spin ice state” Mjpgngras / CC BY-SA 4.0 (cropped)
- Related lab (松野グループ（界面物性グループ）
): “Copper oxide thin-film interference” Infinirivative / CC BY 4.0 (cropped) - Related lab (黒木グループ（固体電子論）
): “Α-Samarium crystal structure” Forbes72 / CC BY-SA 4.0 (cropped) - Related lab (工藤グループ（量子物質開発グループ）
): “Magnetic Levitation Experiment, Science Gallery Dublin, Ireland” Maria Delaney / CC BY-SA 4.0 (cropped) - Related lab (萩原グループ（超強磁場物性グループ）
): “4 LAYER SUPERCONDUCTING MAGNET - NARA - 17418549” Martin Brown / Public domain (cropped)
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