Band structure and Fermi surface ofURu2Si2studied by high-resolution angle-resolved photoemission spectroscopy

1999 ◽  
Vol 60 (19) ◽  
pp. 13390-13395 ◽  
Author(s):  
T. Ito ◽  
H. Kumigashira ◽  
T. Takahashi ◽  
Y. Haga ◽  
E. Yamamoto ◽  
...  
2021 ◽  
Vol 104 (19) ◽  
Author(s):  
Damir Pinek ◽  
Takahiro Ito ◽  
Kanji Furuta ◽  
Arnoldus J. van Bunningen ◽  
Patrick Le Fèvre ◽  
...  

2013 ◽  
Vol 87 (7) ◽  
Author(s):  
Ikuto Kawasaki ◽  
Shin-ichi Fujimori ◽  
Yukiharu Takeda ◽  
Tetsuo Okane ◽  
Akira Yasui ◽  
...  

2021 ◽  
Author(s):  
Mari Watanabe ◽  
Takeshi Suzuki ◽  
Takashi Someya ◽  
Yu Ogawa ◽  
Shoya Michimae ◽  
...  

Abstract We investigated the nonequilibrium electronic structure of 2H-NbSe2 by time- and angle-resolved photoemission spectroscopy. We find that the band structure is distinctively modulated by strong photo-excitation, as indicated by the unusual increase in the photoelectron intensities around EF. In order to gain insight into the observed photo-induced electronic state, we performed DFT calculations with modulated lattice structures, and found that the variation of the Se height from the Nb layer results in a significant change in the effective mass and band gap energy. We further study the momentum-dependent carrier dynamics. The results suggest that the relaxation is faster at the K-centered Fermi surface than at the G-centered Fermi surface, which can be attributed to the stronger electron-lattice coupling at the K-centered Fermi surface. Our demonstration of band structure engineering suggests a new role for light as a tool for controlling the functionalities of solid-state materials.


2011 ◽  
Vol 83 (23) ◽  
Author(s):  
Ikuto Kawasaki ◽  
Shin-ichi Fujimori ◽  
Yukiharu Takeda ◽  
Tetsuo Okane ◽  
Akira Yasui ◽  
...  

2007 ◽  
Vol 310 (2) ◽  
pp. e79-e81
Author(s):  
Shin-ichi Fujimori ◽  
Yuji Saitoh ◽  
Tetsuo Okane ◽  
Hiroshi Yamagami ◽  
Atsushi Fujimori ◽  
...  

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