Relating Localized Electronic States to Host Band Structure In Rare-Earth-Activated Optical Materials

2001 ◽  
Vol 12 (12) ◽  
pp. 64 ◽  
Author(s):  
Charles W. Thiel ◽  
Herve Cruguel ◽  
Huasheng Wu ◽  
Yongchen Sun ◽  
Gerald J. Lapeyre ◽  
...  
2021 ◽  
Vol 117 ◽  
pp. 111141
Author(s):  
U.V. Valiev ◽  
D.N. Karimov ◽  
M.G. Brik ◽  
C.G. Ma ◽  
R.R. Vildanov ◽  
...  

1997 ◽  
Vol 11 (11) ◽  
pp. 477-483 ◽  
Author(s):  
Z. J. Li ◽  
H. B. Xu ◽  
K. L. Yao

Starting from the extensional Su–Schrieffer–Heeger model taking into account the effects of interchain coupling, we have studied the energy spectra and electronic states of soliton excitation in polyacene. The dimerized displacement u0 is found to be similar to the case of trans-polyacetylene, and equals to 0.04 Å. The energy-band gap is 0.38 eV, in agreement with the results derived by other authors. Two new bound electronic states have been found in the conduction band and in the valence band, which is different from the one of trans-polyacetylene. There exists two degenerate soliton states in the center of energy gap. Furthermore, the distribution of charge density and spin density have been discussed in detail.


2004 ◽  
Vol 72 (1-4) ◽  
pp. 283-287 ◽  
Author(s):  
T Hattori ◽  
T Yoshida ◽  
T Shiraishi ◽  
K Takahashi ◽  
H Nohira ◽  
...  

Nanoscale ◽  
2019 ◽  
Vol 11 (38) ◽  
pp. 17894-17903 ◽  
Author(s):  
G. H. Silvestre ◽  
Wanderlã L. Scopel ◽  
R. H. Miwa

(Left) Localization of the electronic states near the Fermi level, and the electronic band structure projected on the S1 and S2 stripes. (Right) Transmission probabilites parallel (y) and perpendicular (x) to the S1/S2 borophene superlattice.


1993 ◽  
Vol 41 (1-4) ◽  
pp. 217-221 ◽  
Author(s):  
Yoshiki Takano ◽  
Kazuko Sekizawa

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