Optimal basis sets for deep levels. I. Potential representations and chemical trends

1985 ◽  
Vol 32 (4) ◽  
pp. 2254-2259 ◽  
Author(s):  
E. O. Kane
2019 ◽  
Vol 150 (15) ◽  
pp. 154106 ◽  
Author(s):  
A. J. C. Varandas ◽  
F. N. N. Pansini

1996 ◽  
Vol 54 (23) ◽  
pp. 16464-16469 ◽  
Author(s):  
Eric L. Shirley

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Penghong Ci ◽  
Xuezeng Tian ◽  
Jun Kang ◽  
Anthony Salazar ◽  
Kazutaka Eriguchi ◽  
...  

AbstractProperties of semiconductors are largely defined by crystal imperfections including native defects. Van der Waals (vdW) semiconductors, a newly emerged class of materials, are no exception: defects exist even in the purest materials and strongly affect their electrical, optical, magnetic, catalytic and sensing properties. However, unlike conventional semiconductors where energy levels of defects are well documented, they are experimentally unknown in even the best studied vdW semiconductors, impeding the understanding and utilization of these materials. Here, we directly evaluate deep levels and their chemical trends in the bandgap of MoS2, WS2 and their alloys by transient spectroscopic study. One of the deep levels is found to follow the conduction band minimum of each host, attributed to the native sulfur vacancy. A switchable, DX center - like deep level has also been identified, whose energy lines up instead on a fixed level across different hosts, explaining a persistent photoconductivity above 400 K.


2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Penghong Ci ◽  
Xuezeng Tian ◽  
Jun Kang ◽  
Anthony Salazar ◽  
Kazutaka Eriguchi ◽  
...  

A Correction to this paper has been published: https://doi.org/10.1038/s41467-020-20151-x


1989 ◽  
Vol 40 (9) ◽  
pp. 6222-6235 ◽  
Author(s):  
Yu-Tang Shen ◽  
Charles W. Myles
Keyword(s):  

1981 ◽  
Vol 36 (4) ◽  
pp. 373-377
Author(s):  
Z. B. Maksić

Properties of the weighted Löwdin orthogonalization procedure are thoroughly discussed. It is shown that its flexibility might be very useful in the construction of optimal truncated basis sets in approximate theories of the electronic structure of molecules and solids. The relevance of pairwise nonorthogonal (hybrid) basis functions is pointed out


2016 ◽  
Vol 127 ◽  
pp. 114-125 ◽  
Author(s):  
Xia Wu ◽  
Tong Wu ◽  
Zhichao Zhan ◽  
Li Yao ◽  
Xiaotong Wen
Keyword(s):  

Author(s):  
A.V. Ryabykh ◽  
M.A. Pirogov ◽  
O.A. Maslova ◽  
S.A. Beznosyuk

In this work, computer simulation has been carried out, and the molecular parameters of oxygen and a superoxide ion have been calculated to select the most optimal basis set of functions for further quantum mechanical calculations that include the presence of reactive oxygen species. For each particle, the equilibrium bond lengths and averaged polarizabilities in a continuous dielectric aqueous medium are obtained with the Conductor-like Polarizable Continuum Model (CPCM) and Solvation Model based on Density (SMD). Calculations for the 16 basic sets are conducted using the Orca software package. The obtained numerical values are compared with experimental data. The electron affinity energy of the oxygen molecule is used as the main selection criterion. The total time of computer calculations for each basis set is considered, and the most optimal basis sets are selected. The basis sets 6-31+G(d), 6-311+G, def2-TZVPD, and aug-cc-pVDZ are recommended for numerical calculations of molecular systems incorporating molecular oxygen and superoxide radical as its reduction product.


NeuroImage ◽  
2005 ◽  
Vol 28 (3) ◽  
pp. 720-737 ◽  
Author(s):  
R.K. Niazy ◽  
C.F. Beckmann ◽  
G.D. Iannetti ◽  
J.M. Brady ◽  
S.M. Smith
Keyword(s):  

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