Researchers

Profile

Electronics Smart Lab

Professor SATO Takafumi
WPI-AIMR
Themes
  • Development of high-resolution spin and spatially resolved ARPES spectrometers 
  • Search for new topological materials and elucidation of key electronic states
  • Search for new atomic-layer materials and investigation of functional properties
Keywords
ARPES, Topological insulator, high-temperature superconductor, atomic-layer material
Research Activities

Development of high-resolution ARPES spectrometers and investigation of electronic structure in quantum materials

We study the electronic structure of novel functional materials such as topological insulators, high-temperature superconductors, and graphene with ultrahigh-resolution angle-resolved photoemission spectroscopy (ARPES). ARPES is a unique and powerful experimental technique to directly observe the momentum-resolved electronic structure. We have constructed ultrahigh-resolution ARPES spectrometers and spin-resolved ARPES spectrometers in our laboratory. Currently, we are developing nano-spin-ARPES system which achieves word-best-level spatial resolution.

Direct observation of surface Dirac-cone states by ARPES in topological insulators.

Message
Due to the recent drastic improvement of the energy/momentum resolution, ARPES is now becoming a standard experimental technique to clarify the mechanism of physical properties and to search for functional properties of quantum materials such as high-temperature superconductors and topological insulators. Recent development of spin, time, and spatially resolved ARPES further makes ARPES more useful in clarifying materials’ properties. Please don’t hesitate to contact me if you have an idea of possible collaboration.

Researchers