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{\Large \bf Photoemission Solid-State Physics Group
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Professor          &:&Takashi~Takahashi\\
Assistant Professor &:&Takafumi~Sato\\

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(http://arpes.phys.tohoku.ac.jp/)\\
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 We study the electronic structure of strongly correlated electron materials
 with ultrahigh-resolution angle-resolved photoemission spectroscopy
 (ARPES).  Our current interest is on high-temperature cuprate 
 superconductors, novel boride compounds, strongly correlated 
 cerium or uranium compounds, low-dimensional organic superconductors, 
 etc.  We have constructed/improved an ultrahigh-resolution 
 ARPES spectrometer in our laboratory and the present energy resolution
 (less than 2 meV) is among the world-best records.   

On-going researches: (1) electronic structure and mechanism of high-temperature
 superconductors, in particular, superconducting 
"quasiparticles" near the Fermi level, (2) mechanism and origin of high-temperature
 superconductivity of magnesium diboride (MgB$_2$) (3) Kondo-lattice effect in 
 4{\it f}/5{\it f} electron materials, (4) spin-charge separation/confinement in 
 low-dimensional materials.  

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