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Low-Dimensional Materials Physics Lab
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The lab uses experiments to explore quantum phenomena produced by electrons confined to one or two dimensions.
AboutAbout the lab
Exploring new quantum phenomena in one- and two-dimensional materials.
The Low-Dimensional Materials Physics Lab experimentally studies new quantum phenomena that appear in materials where electron motion is confined to one or two dimensions.
Using NMR (nuclear magnetic resonance) as its main method, the lab investigates various ordered states in molecular conductors and strongly correlated electron systems.
Using electrical and magnetization measurements at low temperatures, high magnetic fields, and high pressures, as well as low-temperature scanning tunneling microscopy, the lab studies superconductivity and charge and spin density waves.
The lab also studies topological quantum phenomena in small samples made by microfabrication, and can synthesize the organic compounds used in its research within the lab.
Key terms
- NMR
- A phenomenon in which nuclear spins in a magnetic field resonate with electromagnetic waves. It is used to measure the magnetic field at nuclear sites with high precision.
- Molecular conductor
- Among crystals formed by a regular arrangement of organic molecules and the like, those that conduct electricity.
- Spin density wave
- A collective state in which electron spins change periodically within a crystal.
- Bose glass
- A state in which pairs of electrons stay localized at scattered positions, unable to move.
NewsLab news
Paper on the Bose glass in Ca2RuO4 nanofilms published in Communications Materials
Paper demonstrating vortex motion in the smectic vortex liquid crystal published in Physical Review Letters (press release)
Collaborative research group realizes a new superconducting state in La2CuO4, the oldest cuprate superconductor (press release)
ResearchResearch themes
Centered on NMR, the lab studies superconductivity, charge and spin density waves, and topological quantum phenomena that appear in low-dimensional electron systems. It combines precise measurements under conditions such as low temperature, high magnetic field, and high pressure with sample preparation by microfabrication.
*Illustrative imageMeasuring the Magnetic Field at Atomic Nuclei with NMR
NMR resonates nuclear spins by applying electromagnetic waves, allowing the lab to measure the local magnetic field at the nuclear sites with high precision. With this method as its mainstay, the lab investigates ordered states in molecular conductors and strongly correlated electron systems.
*Illustrative imageBose Glass in Oxide Nanofilms
In nanofilms of the ruthenium oxide Ca2RuO4, the lab found a Bose glass state, in which electron pairs remain localized up to temperatures as high as about 220 K.
*Illustrative imageDynamics of the Smectic Vortex Liquid Crystal
The lab studied the collective motion of the "smectic vortex liquid crystal," in which magnetic flux (vortices) entering a superconductor lines up in layers, and discovered a large Hall response that differs from the conventional one.
*Illustrative imageOrganic Crystals and Superconductivity Changing with Pressure
The lab showed that applying pressure to the organic molecular crystal (DMET-TTF)2AuBr2 changes its crystal structure and produces antiferromagnetism, and that superconductivity then appears at about 6 GPa.
MembersFaculty
- ProfessorAtsushi Kawamoto
- Associate ProfessorNoriaki Matsunaga
- LecturerYoshihiko Ihara
- Assistant ProfessorShuhei Fukuoka
- Assistant ProfessorHiroyoshi Nobukane
- Assistant ProfessorSekika Yamamoto
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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: “900 magnet new” Speeding Cars at English Wikipedia / CC BY-SA 3.0 (cropped)
- Measuring the Magnetic Field at Atomic Nuclei with NMR: “Breit-rabi-Zeeman-en” Д.Ильин: vectorization / CC0 (cropped)
- Bose Glass in Oxide Nanofilms: “Copper oxide thin-film interference” Infinirivative / CC BY 4.0 (cropped)
- Dynamics of the Smectic Vortex Liquid Crystal: “XLD Pulse-Tube-Type Large Frame Dilution Refrigerator Cryostat” OJB Quantum / CC BY 4.0 (cropped)
- Organic Crystals and Superconductivity Changing with Pressure: “DiamondAnvilCell 002” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (Statistical Physics Lab): “Geometric Frustration and Spin Correlated Disorder on a Hexagonal Lattice” Dxz2019 / CC BY-SA 4.0 (cropped)
- Related lab (Mathematical Physics Lab): “Penrose tiling in CC-3, IIIT Allahabad” Deepak Purti / CC BY-SA 4.0 (cropped)
- Related lab (Quantum Condensed Matter Physics Lab): “Thin section scan crossed polarizers Siilinjärvi R edit” kallerna / CC BY-SA 4.0 (cropped)
- Related lab (Solid State Electronic Properties Lab): “YBCO-xtal-3D-SF” Ben Mills / Public domain (cropped)
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