scholarly journals Effective Simulations of Electronic Transport in 2D Structures Based on Semiconductor Superlattice Infinite Model

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1845
Author(s):  
Mariusz Mączka

Effective simulations of semiconductor superlattices are presented in the paper. The simulations have been based on the Wannier function method approach where a new algorithm, inspired by Büttiker probes, has been incorporated into determining the Green function procedure. The program is of a modular structure, and its modules can either work independently, or interact with each other following a predefined algorithm. Such structuring not only accelerates simulations and makes the transport parameters possible to initially assess, but also enables accurate analysis of quantum phenomena occurring in semiconductor superlattices. In this paper, the capabilities of type I superlattice simulator, developed earlier, are presented, with particular emphasis on the new block where the Fermi levels are determined by applying Büttiker probes. The algorithms and methods used in the program are briefly described in the further chapters of our work, where we also provide graphics illustrating the results obtained for the simulated structures known from the literature.


1993 ◽  
Vol 07 (05) ◽  
pp. 299-305 ◽  
Author(s):  
H. LUO ◽  
J. K. FURDYNA

We discuss the localization of states whose energy exceeds potential barriers in a semiconductor superlattice. Although there are no confining potentials for such states, the potential discontinuities reflect the electron waves in such a way as to impose constructive interference conditions on the electron states, leading to significant confinement effects.





1990 ◽  
Vol 210 ◽  
Author(s):  
M. Spears ◽  
S. Kramer ◽  
P.K. Moon ◽  
H.L. Tuller

AbstractThe transport properties of the pyrochlore solid solution Gd2(ZrxTil-x)2O7 are investigated to clarify the relationships between composition, structural disorder and ionic and electronic transport. The oxygen ion conductivity has been found to increase sharply with increasing Zr content, x, due to enhanced structural disorder, leading to intrinsic ionic conduction at large values ofx. In contrast, the n—type conductivity predominant at low x, decreases sharply above x=0.2. Defect chemical models are presented to account for the simultaneous contributions of both intrinsic and dopant induced disorder. These models are applied to the σ(T, PO2, dopant) data to extract key thermodynamic and transport parameters. The significance of these parameters and the potential application of these materials in electrochemical devices are discussed.



2007 ◽  
Vol 06 (05) ◽  
pp. 395-398
Author(s):  
J. Y. ROMANOVA ◽  
Y. A. ROMANOV

We consider the dynamics of electrons in semiconductor superlattices in intense multifrequency electric fields. We examine the conditions for dynamic localization and electromagnetic transparency. We investigate processes of formation, destruction, and stabilization of electromagnetic transparency in biharmonic field. The stable states with static fields are determined.



Author(s):  
L. L. BONILLA ◽  
L. BARLETTI ◽  
R. ESCOBEDO ◽  
M. ALVARO


1997 ◽  
Vol 55 (20) ◽  
pp. 13689-13696 ◽  
Author(s):  
M. Hosoda ◽  
H. Mimura ◽  
N. Ohtani ◽  
K. Tominaga ◽  
K. Fujita ◽  
...  




2009 ◽  
Vol 79 (24) ◽  
Author(s):  
Huidong Xu ◽  
Andreas Amann ◽  
Eckehard Schöll ◽  
Stephen W. Teitsworth




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