Parity and abrupt broadening of resonance levels in triple-barrier structures

Пашковский, А. Б.

doi:10.1134/1.2121816

Cited by 12 publications

(15 citation statements)

References 2 publications

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“…Here, the Hamiltonian of the system contains the electron kinetic energy (the first term), the electron potential energy written in a typical δ-barrier approximation (see [5][6][7][8][9][10][11][12]),…”

Section: Permeability Coefficient For the Two-barrier Rts In High-frementioning

confidence: 99%

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Evolution of electron spectrum in symmetric two-barrier open nanostructure under the influence of strong electromagnetic field

Tkach¹,

Seti²,

Voіtseкhіvsкa³

2012

Ukr. J. Phys. Opt.

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Abstract.A theory of quasi-stationary spectrum of electrons interacting with electromagnetic field of arbitrary intensity in an open two-barrier resonance tunnel structure is developed using exact solution of the complete Schrödinger equation. It is shown that, besides the quasi-stationary electronic states having usual resonance energies and widths, additional satellite quasi-stationary states appear in the spectrum, with their resonance energies located near the resonance energies of every of the quasi-stationary states at the distances being multiples of an energy fixed by the electromagnetic field frequency.

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Section: Permeability Coefficient For the Two-barrier Rts In High-frementioning

confidence: 99%

“…In the majority of the relevant theoretical papers [5][6][7][8][9], a so-called small signal approximation has been used. In its frames, only terms linear in the electric intensity of electromagnetic field are maintained in the Hamiltonian and the wave functions.…”

Section: Introductionmentioning

confidence: 99%

Evolution of electron spectrum in symmetric two-barrier open nanostructure under the influence of strong electromagnetic field

Tkach¹,

Seti²,

Voіtseкhіvsкa³

2012

Ukr. J. Phys. Opt.

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“…The solution of equation (2.2) in one-mode approximation, assuming the amplitude of high frequency field to be small [12][13][14]18], according to the perturbation theory, is as follows:…”

Section: Hamiltonian Conductivity Of Three-barrier Nanosystemmentioning

confidence: 99%

“…In references [9][10][11][12][13][14][15], mainly within the model of unitary effective mass and δ-like potential barriers, there have been developed the theoretical approaches to the calculation of active conductivity of electrons in open RTS. Recently, in references [16,17] it was shown that δ-barrier model with unitary electron effective yields too rough magnitudes of resonance widths of quasistationary states (ten times bigger) relatively to the realistic model of rectangular potential barriers with different effective masses of quasiparticle in different pars of RTS.…”

Section: Introductionmentioning

confidence: 99%

Dynamic conductivity of symmetric three-barrier plane nanosystem in constant electric field

Seti¹,

Tkach²,

Voіtseкhіvsкa³

2011

Condens. Matter Phys.

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The theory of dynamic conductivity of nanosystem is developed within the model of rectangular potentials and different effective masses of electron in open three-barrier resonance-tunnel structure in a constant homogeneous electric field.The application of this theory for the improvement of operating characteristics of quantum cascade laser active region (for the experimentally investigated In 0.53 Ga 0.47 As/In 0.52 Al 0.48 As heterosystem) proves that for a certain geometric design of nanosystem there exists such minimal magnitude of constant electric field intensity, at which the electromagnetic field radiation power together with the density of current flowing through the separate cascade of quantum laser becomes maximal.

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“…The mathematical complication is that in the majority of theoretical papers [10][11][12][13][14][15][16][17] simplified models of nano-systems (mainly the plane ones) are used. These models are based at the δ-barrier approximation of RTS rectangular potential barriers.…”

Section: Introductionmentioning

confidence: 99%

Electronic Conductivity in Open Cylindrical Two-Barrier Symmetric Resonance Tunnel Structure

et al. 2010

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The theory of resonance energies and widths of electron quasi-stationary states and electronic conductivity in open cylindrical two-barrier symmetric resonance tunnel structure is developed. The complete Schrodinger equation is solved within the model of effective masses for rectangular potential wells and barriers. Interaction between electrons and electromagnetic field was taken into account using the approximation of the small signal. The calculations of spectral parameters are performed for In 0.53 Ga 0.47 As/In 0.52 Al 0.48 As resonance tunnel structure. The dependences of conductivity on the energy of mono-energy electrons beam falling at the system and electromagnetic field energy absorbed or emitted by the system are obtained and analyzed. The relation between experimentally measured parameters of conductivity and resonance widths of electron quasi-stationary states in open resonance tunnel structure is established.

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Parity and abrupt broadening of resonance levels in triple-barrier structures

Cited by 12 publications

References 2 publications

Evolution of electron spectrum in symmetric two-barrier open nanostructure under the influence of strong electromagnetic field

Evolution of electron spectrum in symmetric two-barrier open nanostructure under the influence of strong electromagnetic field

Dynamic conductivity of symmetric three-barrier plane nanosystem in constant electric field

Electronic Conductivity in Open Cylindrical Two-Barrier Symmetric Resonance Tunnel Structure

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