Electronic energy bands of lead: Angle-resolved photoemission and band-structure calculations

1984 ◽  
Vol 30 (4) ◽  
pp. 1711-1719 ◽  
Author(s):  
K. Horn ◽  
B. Reihl ◽  
A. Zartner ◽  
D. E. Eastman ◽  
K. Hermann ◽  
...  
Keyword(s):  
Band Structure ◽  
Electronic Energy ◽  
Energy Bands ◽  
Lead Angle ◽  
Band Structure Calculations ◽  
Electronic Energy Bands ◽  
Structure Calculations

Optical Properties of Ordered Ge-Si Atomic-Layer Superlattices

1987 ◽  
Vol 91 ◽  
Author(s):  
T. P. Pearsall ◽  
J. Bevk ◽  
J. C. Bean ◽  
J. M. Bonar ◽  
J. P. Mannaerts
Keyword(s):  
Optical Properties ◽  
Band Structure ◽  
Atomic Layer ◽  
Electronic Energy ◽  
Optical Transitions ◽  
Energy Bands ◽  
Si Substrates ◽  
Superlattice Structure ◽  
Random Alloy ◽  
Electronic Energy Bands

ABSTRACTA systematic study of the band-to-band optical transitions in commensurate strainedlayer superlattices of Ge and Si grown on (001) Si substrates show the presence of new electronic energy bands. Our measurements suggest that superlattice structure on the same scale as the unit cell results in a band structure significantly different from that of a random alloy.

Low Energy K-Dependent Electronic Structure of the Layered Magnetoresistive Oxide La1.2Sr1.8Mn2O7

1997 ◽  
Vol 494 ◽  
Author(s):  
T. Saitoh ◽  
D. S. Dessau ◽  
C.-H. Park ◽  
Z.-X. Shen ◽  
P. Villella ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Band Structure ◽  
Current System ◽  
Coupling Model ◽  
Local Spin Density Approximation ◽  
Energy Bands ◽  
Strong Electron ◽  
Colossal Magnetoresistive ◽  
Band Structure Calculations ◽  
Structure Calculations

ABSTRACTWe have studied the fc-dependent electronic structure of the layered colossal magnetoresistive manganite La1.2Sr1.8Mn2O7 using high-resolution angle-resolved photoemission spectroscopy. We found dispersive energy bands as a function of the crystal momentum k near the Fermi level (EF). We have also performed local spin density approximation (LSDA)+U band-structure calculations on the current system. The overall experimental dispersion relation is basically in agreement with the band-structure calculations yet close to EF there is a significant deviation from the predicted dispersions. Instead of clear Fermi-surface (FS) crossings, we observe a depression of the features as the FS is approached as if there is a “pseudo” gap in the excitation spectrum. The pseudogap continuously opens with temperature and does not show further significant opening above Tc, corresponding to the metal-insulator transition. Those unusual aspects of the spectra has been discussed from the viewpoint of the strong electron-lattice coupling model.

EFFECTS OF NEXT-NEAREST-NEIGHBOR HOPPING INTERACTION ON THE STRUCTURE OF ELECTRONIC ENERGY BANDS OF POLYDIACETYLENES

1996 ◽  
Vol 10 (19) ◽  
pp. 931-937 ◽  
Author(s):  
H.F. HU ◽  
K.L. YAO
Keyword(s):  
Band Structure ◽  
Electronic State ◽  
Energy Band ◽  
Nearest Neighbor ◽  
Energy Gap ◽  
Electronic Energy ◽  
Energy Band Structure ◽  
Energy Bands ◽  
Extensional Model ◽  
Electronic Energy Bands

Starting from the extensional model Hückel Hamiltonian containing the next-neighbor hopping interactions, the energy band structure and their variation have been studied for polydiacetylenes (PDA’s). With the increase of the next-neighbor hopping interaction parameter ρ the results show that: (1) the electronic state symmetry is broken, (2) the locations and the widths of energy bands have been changed, and (3) the energy gap becomes narrower and the total bandwidth broader. Finally, the effect of the nextneighbor hopping interactions on the band-structure is discussed.

Elementary energy bands in band structure calculations of some wide-bandgap crystals

2004 ◽  
Vol 201 (2) ◽  
pp. 304-307 ◽  
Author(s):  
M. Sznajder ◽  
D. M. Bercha ◽  
K. Z. Rushchanskii
Keyword(s):  
Band Structure ◽  
Wide Bandgap ◽  
Energy Bands ◽  
Band Structure Calculations ◽  
Structure Calculations

scholarly journals Fermi surface of the skutterudite CoSb3 : Quantum oscillations and band-structure calculations

2021 ◽  
Vol 103 (8) ◽  
Author(s):  
M. Naumann ◽  
P. Mokhtari ◽  
Z. Medvecka ◽  
F. Arnold ◽  
M. Pillaca ◽  
...  
Keyword(s):  
Band Structure ◽  
Fermi Surface ◽  
Quantum Oscillations ◽  
Band Structure Calculations ◽  
Structure Calculations

Extrinsic photonic band structure calculations of a doped semiconductor under an external magnetic field

2008 ◽  
Vol 372 (31) ◽  
pp. 5224-5228 ◽  
Author(s):  
Renlong Zhou ◽  
Xuewen Wang ◽  
Bingju Zhou ◽  
Yongyi Gao ◽  
Xiaojuan Liu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Band Structure ◽  
Photonic Band Structure ◽  
Band Structure Calculations ◽  
Photonic Band ◽  
Structure Calculations
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