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Takagi Lab
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A lab that observes single atoms and single molecules under a microscope to explore new materials formed on surfaces.
AboutAbout the lab
Exploring the world of atoms and molecules on solid surfaces.
The Takagi Lab uses scanning tunneling microscopy and spectroscopy to study nanoscience on solid surfaces.
A solid surface is a special place where the periodicity of the crystal is broken. The arrangement of atoms and the electronic states there differ greatly from those in the interior, and a surface can also serve as a place to create new materials that do not exist in nature.
The lab combines experiments under ultra-high vacuum and at extremely low temperatures with collaboration with researchers in first-principles calculations and many-body theory of condensed matter.
Undergraduates are assigned to the Materials Science Division to carry out their graduation research (in the graduate school, this is the Materials Science Division of the Department of Human and Environmental Studies, Graduate School of Human and Environmental Studies).
Key terms
- Scanning tunneling microscope
- A microscope that brings a sharp tip close to a surface and lets you see the arrangement of individual atoms from the current that flows between them
- Kondo effect
- A quantum mechanical phenomenon in which electrons in a metal gather around an atom or molecule that has magnetic properties
- Silicene
- A sheet one atom thick in which silicon atoms are arranged in a honeycomb pattern. It does not exist in nature
ResearchResearch themes
Using scanning tunneling microscopy and spectroscopy, the lab studies the magnetism of molecules on solid surfaces and new low-dimensional materials created on surfaces.
*Illustrative imageMagnetism and quantum properties of single molecules
The lab studies the detection of the spin of a single molecule, the magnetic anisotropy of molecules, the Kondo effect in which a molecule's spin becomes coupled with electrons in the surface, and low-dimensional Kondo lattices in which molecules that cause the Kondo effect are arranged in a regular pattern.
*Illustrative imageNew low-dimensional materials created on surfaces
The lab studies graphene and graphene nanoribbons, silicene, and the Weyl semimetals MoTe2 and WTe2 created on surfaces, determining their structures with scanning tunneling microscopy and clarifying their electronic states with spectroscopy.
MembersFaculty
- ProfessorNoriaki Takagi
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: “Scanning tunnelling microscope ( )” UCL Mathematical and Physical Sciences from London, UK / CC BY 2.0 (cropped)
- Magnetism and quantum properties of single molecules: “D sup et inf à 0 et taille de la barrière” HShtt / CC BY-SA 4.0 (cropped)
- New low-dimensional materials created on surfaces: “Carbon nanoribbon chiral povray” Arnero / Public domain (cropped)
- Related lab (Brain Function Development and Regeneration Lab (Itaru Imayoshi)): “Neuron Classification” BruceBlaus / CC BY-SA 4.0 (cropped)
- Related lab (Environmental Earth Science Lab): “Fish otolith on sectioning saw - USGS” Dona Eidam/USGS / CC BY-SA 3.0 (cropped)
- Related lab (Solid Earth Science (Mamoru Kato) Lab): “Seismogram on historical seismometer at Institute of Geophysis of the Czech Academy of Science (19)” Petr Brož (Czech Academy of Science) / CC BY-SA 4.0 (cropped)
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