CONFINEMENT OF STATES ABOVE POTENTIAL BARRIERS IN SEMICONDUCTOR SUPERLATTICES

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.

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DYNAMIC LOCALIZATION AND ELECTROMAGNETIC TRANSPARENCY OF SEMICONDUCTOR SUPERLATTICE IN MULTIFREQUENCY ELECTRIC FIELDS

International Journal of Nanoscience ◽

10.1142/s0219581x0700450x ◽

2007 ◽

Vol 06 (05) ◽

pp. 395-398

Author(s):

J. Y. ROMANOVA ◽

Y. A. ROMANOV

Keyword(s):

Electric Fields ◽

Stable States ◽

Semiconductor Superlattices ◽

Dynamic Localization ◽

Semiconductor Superlattice ◽

Electromagnetic Transparency

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.

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One-dimensional confinement effects on miniband transport in a semiconductor superlattice

Physical Review B ◽

10.1103/physrevb.48.5366 ◽

1993 ◽

Vol 48 (8) ◽

pp. 5366-5373 ◽

Cited By ~ 9

Author(s):

X. L. Lei ◽

N. J. M. Horing ◽

H. L. Cui ◽

K. K. Thornber

Keyword(s):

Confinement Effects ◽

One Dimensional ◽

Semiconductor Superlattice ◽

Miniband Transport

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Confinement effects on decay rate of surface electron states over liquid helium

Low Temperature Physics ◽

10.1063/1.2913001 ◽

2008 ◽

Vol 34 (4) ◽

pp. 385-387 ◽

Cited By ~ 4

Author(s):

S. S. Sokolov ◽

Yu. P. Monarkha ◽

J. M. Villas-Bôas ◽

Nelson Studart

Keyword(s):

Decay Rate ◽

Liquid Helium ◽

Confinement Effects ◽

Surface Electron ◽

Electron States

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ON THE PHONON POLARITON MODES IN SEMICONDUCTOR SUPERLATTICES

Modern Physics Letters B ◽

10.1142/s0217984905008475 ◽

2005 ◽

Vol 19 (09n10) ◽

pp. 425-433 ◽

Cited By ~ 2

Author(s):

K. S. JOSEPH WILSON ◽

K. NAVANEETHAKRISHNAN

Keyword(s):

Brillouin Zone ◽

Numerical Results ◽

Semiconductor Superlattices ◽

Semiconductor Superlattice ◽

The Past ◽

Te And Tm Modes ◽

Zone Edge

The phonon polariton modes in a semiconductor superlattice system is discussed using GaAs/GaP system as an example. The significance of one of the modes, which had not been paid sufficient attention in the past, is pointed out. Numerical results are presented for both TE and TM modes, both at the superlattice Brillouin zone edge and at the center.

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

Electronics ◽

10.3390/electronics9111845 ◽

2020 ◽

Vol 9 (11) ◽

pp. 1845

Author(s):

Mariusz Mączka

Keyword(s):

Electronic Transport ◽

Type I ◽

Transport Parameters ◽

Semiconductor Superlattices ◽

Accurate Analysis ◽

Semiconductor Superlattice ◽

Quantum Phenomena ◽

The Green Function ◽

Infinite Model ◽

Method Approach

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.

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Electron transmission and phase time in semiconductor superlattices

Canadian Journal of Physics ◽

10.1139/p08-001 ◽

2008 ◽

Vol 86 (4) ◽

pp. 515-522 ◽

Cited By ~ 1

Author(s):

D W.L. Sprung ◽

W van Dijk ◽

C N Veenstra ◽

J Martorell

Keyword(s):

Periodic System ◽

Dwell Time ◽

Semiconductor Superlattices ◽

Electron Transmission ◽

Semiconductor Superlattice ◽

Phase Time ◽

Period System

We discuss the time spent by an electron propagating through a finite periodic system such as a semiconductor superlattice. The relation between dwell-time and phase-time is outlined. The envelopes of phase-time at maximum and minimum transmission are derived, and it is shown that the peaks and valleys of phase-time are well described by parameters fitted at the extrema. For a many-period system this covers most of the allowed band.PACS Nos.: 03.65.Xp, 73.63.–b, 05.60.Cg

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