Optical properties of vanadium pentoxide determined from ellipsometry and band-structure calculations

1990 ◽  
Vol 42 (8) ◽  
pp. 5289-5293 ◽  
Author(s):  
J. C. Parker ◽  
D. J. Lam ◽  
Y.-N. Xu ◽  
W. Y. Ching
Keyword(s):  
Optical Properties ◽  
Band Structure ◽  
Vanadium Pentoxide ◽  
Band Structure Calculations ◽  
Structure Calculations

Investigation on crystal structures, optical properties, and band structure calculations of In2-xMxTeO6 (M = Ga, Bi, La)

2017 ◽  
Vol 702 ◽  
pp. 601-610
Author(s):  
Arreerat Jiamprasertboon ◽  
Thanundon Kongnok ◽  
Sirichok Jungthawan ◽  
Pinit Kidkhunthod ◽  
Narong Chanlek ◽  
...  
Keyword(s):  
Optical Properties ◽  
Band Structure ◽  
Crystal Structures ◽  
Band Structure Calculations ◽  
Structure Calculations

PHYSICAL PROPERTIES OF AuAl2, AuGa2, AuIn2, AND PtGa2

1994 ◽  
Vol 08 (21n22) ◽  
pp. 1297-1318 ◽  
Author(s):  
LI-SHING HSU
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Band Structure ◽  
Physical Properties ◽  
Fermi Level ◽  
Density Of States ◽  
Band Structure Calculations ◽  
Structure Calculations ◽  
Film Form

The structural, electronic, magnetic, and optical properties of AuAl 2, AuGa 2, AuIn 2, and PtGa2 are reviewed. These experimental results are compared with the values of the density of states at the Fermi level derived from band-structure calculations. The so-called “ AuGa 2 dilemma” and the controversial positions of the Au 5d bands in AuAl 2, AuGa 2, and AuIn 2 are discussed. The physical properties of PtGa 2 are summarized and compared with those of the Au intermetallic compounds. Recent researches on the growth and characterization of these compounds in thin-film form are also presented.

Optical Properties of C60 and M6C60 (M=K, Rb, Cs) films

1992 ◽  
Vol 247 ◽  
Author(s):  
S. L. Ren ◽  
Ying Wang ◽  
M. Holden ◽  
A. M. Rao ◽  
F. Ni ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Band Structure ◽  
Photoelectron Spectroscopy ◽  
Normal Incidence ◽  
X Ray ◽  
Band Structure Calculations ◽  
Electron Energy Loss ◽  
Homo Lumo ◽  
Structure Calculations

ABSTRACTWe report the optical properties of C60 determined from the variable angle ellipsometry and near normal incidence reflection / transmission (R.T) experiments, and of M6C60 from the R, T experiments. The measurements were performed on thin films (d∼1000 Å) of C60 and M6C60 deposited on both Si(100) and suprasil substrates. The onset for strong absorption across the HOMO-LUMO gap in CgQ is measured to be -2.3 eV, slightly larger than the gap values obtained from the x-ray photoelectron spectroscopy (XPS) and electron-energy-loss spectroscopy (EELS) experiments. The observed peak positions in ε2(ω) for M6C60 and C60 compares well with the recent band structure calculations and suggests that the M6C60 compounds exhibit only a weak hybridization between the C60 and M states.

scholarly journals Peculiarities in optical response of hybrid-barrier GaSb/InAs/AlSb resonant tunneling diode structure

2021 ◽  
Vol 51 (2) ◽  
Author(s):  
M. Dyksik ◽  
M. Motyka ◽  
M. Rygała ◽  
A. Pfenning ◽  
F. Hartmann ◽  
...  
Keyword(s):  
Optical Properties ◽  
Band Structure ◽  
Quantum Wells ◽  
Resonant Tunneling ◽  
Type Ii ◽  
Optical Transitions ◽  
Comprehensive Investigation ◽  
Tunneling Diode ◽  
Band Structure Calculations ◽  
Structure Calculations

We present comprehensive investigation of the optical properties of hybrid-barrier GaSb-based resonant tunneling structures, containing a bulk-like GaInAsSb absorption layer and two asymmetric type II GaSb/InAs/AlSb quantum wells. Methods of optical spectroscopy by means of Fourier-transformed photoluminescence and photoreflectance are employed to probe optical transitions in this complex multilayer system. Based on the comparison between the absorption-like and emission-like spectra (also in function of temperature) confronted with band structure calculations four main transitions could be resolved and identified. For one of them, there has been observed unusually strong linear polarization dependence never reported in structures of that kind. It has been interpreted as related to a transition at the GaSb/GaInAsSb interface, for which various scenarios causing the polarization selectivity are discussed.

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
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