scholarly journals Fermi surface ofLaRu4P12: A clue to the origin of the metal-insulator transition inPrRu4P12

2005 ◽  
Vol 71 (13) ◽  
Author(s):  
S. R. Saha ◽  
H. Sugawara ◽  
Y. Aoki ◽  
H. Sato ◽  
Y. Inada ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

Fermi-surface reconstruction close to a pressure-induced metal-insulator transition

2004 ◽  
Vol 114 ◽  
pp. 277-281 ◽  
Author(s):  
J. Wosnitza ◽  
J. Hagel ◽  
O. Stockert ◽  
C. Pfleiderer ◽  
J. A. Schlueter ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Surface Reconstruction ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Fermi Surface Reconstruction

scholarly journals Fermi surface properties of the bifunctional organic metal κ−(BETS)2Mn[N(CN)2]3 near the metal-insulator transition

2019 ◽  
Vol 99 (12) ◽  
Author(s):  
V. N. Zverev ◽  
W. Biberacher ◽  
S. Oberbauer ◽  
I. Sheikin ◽  
P. Alemany ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Surface Properties ◽  
Insulator Transition ◽  
Organic Metal ◽  
Metal Insulator Transition ◽  
Metal Insulator

scholarly journals Gradual disappearance of the Fermi surface near the metal-insulator transition inLa1−xSrxMnO3thin films

2007 ◽  
Vol 76 (20) ◽  
Author(s):  
A. Chikamatsu ◽  
H. Wadati ◽  
H. Kumigashira ◽  
M. Oshima ◽  
A. Fujimori ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Gradual Disappearance

1T−TaS2charge-density-wave metal-insulator transition and Fermi-surface modification observed by photoemission

1981 ◽  
Vol 24 (12) ◽  
pp. 7435-7438 ◽  
Author(s):  
R. A. Pollak ◽  
D. E. Eastman ◽  
F. J. Himpsel ◽  
P. Heimann ◽  
B. Reihl
Keyword(s):  
Surface Modification ◽  
Fermi Surface ◽  
Density Wave ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

scholarly journals METAL-INSULATOR TRANSITION OF NaxWO3 STUDIED BY ANGLE-RESOLVED PHOTOEMISSION SPECTROSCOPY

2009 ◽  
Vol 23 (24) ◽  
pp. 2819-2846 ◽  
Author(s):  
SATYABRATA RAJ ◽  
TAKAFUMI SATO ◽  
SEIGO SOUMA ◽  
TAKASHI TAKAHASHI ◽  
D. D. SARMA ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Fermi Level ◽  
Good Description ◽  
Tungsten Bronze ◽  
Insulator Transition ◽  
Photoemission Spectroscopy ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Sodium Tungsten

The electronic structure of sodium tungsten bronzes Na x WO 3 is investigated by high-resolution angle-resolved photoemission spectroscopy (ARPES). The ARPES spectra measured in both insulating and metallic phases of Na x WO 3 reveals the origin of metal-insulator transition (MIT) in sodium tungsten bronze system. It is found that in insulating Na x WO 3 the states near the Fermi level (EF) are localized due to the strong disorder caused by the random distribution of Na + ions in WO 3 lattice. Due to the presence of disorder and long-range Coulomb interaction of conduction electrons, a soft Coulomb gap arises, where the density of states vanishes exactly at EF. In the metallic regime the states near EF are populated and the Fermi level shifts upward rigidly with increasing electron doping (x). Volume of electron-like Fermi surface (FS) at the Γ(X) point of the Brillouin zone gradually increases with increasing Na concentration due to W 5d t2g band filling. A rigid shift of the Fermi energy is found to give a qualitatively good description of the Fermi surface evolution. As we move from bulk-sensitive to more surface sensitive photon energy, we found the emergence of Fermi surfaces at X(M) and M(R) points similar to the one at the Γ(X) point in the metallic regime, suggesting that the reconstruction of surface was due to rotation/deformation of WO 6 octahedra.

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