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Publisher: Elsevier

Issued date: 1996-05-27

Citation: Physics Letters A, vol. 215, n. 1-2, 27 may. 1996. Pp. 103-107

ISSN: 0375-9601

DOI: 10.1016-0375-96019600202-2

Sponsor: This work is supported by CICYT Spain through project No. MAT95-032S.

Publisher version: http:-dx.doi.org-10.1016-0375-96019600202-2

Abstract:We introduce a model of a nonlinear double-barrier structure to describe in a simple way the effects of electron-electronscattering while remaining analytically tractable. The model is based on a generalized effective-mass equation where anon linear local We introduce a model of a nonlinear double-barrier structure to describe in a simple way the effects of electron-electronscattering while remaining analytically tractable. The model is based on a generalized effective-mass equation where anon linear local field interaction is introduced to account for those inelastic scattering phenomena. Resonance peaks seenin the transmission coefficient spectra for the linear case appear shifted to higher energies depending on the magnitude ofthe non linear coupling. Our results are in good agreement with self-consistent solutions of the Schrodinger and Poissonequations. The calculation procedure is seen to be very fast, which makes our technique a good candidate for a rapidapproximate analysis of these structures.+-





Author: Diez, Enrique; Sánchez, Angel; Domínguez-Adame, Francisco

Source: http://e-archivo.uc3m.es


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Universidad Carlos III de Madrid Repositorio institucional e-Archivo http:--e-archivo.uc3m.es Grupo Interdisciplinar de Sistemas Complejos (GISC) DM - GISC - Artículos de Revistas 1996-05-27 Effective nonlinear model of resonant tunneling nanostructures Diez, Enrique Elsevier Physics Letters A, vol.
215, n.
1-2, 27 may.
1996.
Pp.
103-107 http:--hdl.handle.net-10016-15304 Descargado de e-Archivo, repositorio institucional de la Universidad Carlos III de Madrid Effective nonlinear model of resonant tunneling nanostructures Enrique Diez a, Angel Sanchez a, Francisco Domfnguez-Adame b - Departamento de Matematicas.
Universidad Carlos 1-1 de Madrid.
C.- Butarque J5.
£-289 J J Leganes.
Madrid.
Spain h Departamento de Frsica de Materiales.
Facultad de Frsicas.
Universidad Complutense.
£-28040 Madrid.
Spain Abstract We introduce a model of a nonlinear double-barrier structure to describe in a simple way the effects of electron-electron scattering while remaining analytically tractable.
The model is based on a generalized effective-mass equation where a non linear local field interaction is introduced to account for those inelastic scattering phenomena.
Resonance peaks seen in the transmission coefficient spectra for the linear case appear shifted to higher energies depending on the magnitude of the non linear coupling.
Our results are in good agreement with self-consistent solutions of the Schrodinger and Poisson equations.
The calculation procedure is seen to be very fast, which makes our technique a good candidate for a rapid approximate analysis of these structures. PACS: 7~.40.Gk; 72.IO.-d; 03.40.Kf Resonant tunneling (RT) through double-barrier structures (DBS) makes these systems very promising candidates for a new generation of ultra-high speed electronic devices.
For instance, a GaAs-Gal_xAlxAs DBS operating at THz frequencies has been reported in the literature [ I ].
The basic reason for RT to arise in DBS is a quantum phenomenon whose fundamental ch...





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